[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Barahona, Daniel"]
[Black "Rodrigues, Adriano"]
[Result "1/2-1/2"]
[ECO "B25"]
[EventDate "1990.??.??"]
[PlyCount "179"]

1.e4 c5 2.Nc3 e6 3.g3 Nc6 4.Bg2 g6 5.d3 Bg7 6.f4 d6 7.Nf3 Nge7 8.O-O O-O 
9.Be3 Nd4 10.e5 Nec6 11.Ne4 dxe5 12.Nxe5 Nxe5 13.fxe5 Bxe5 14.c3 Nf5 15.
Bxc5 Re8 16.Bf2 Bg7 17.Qf3 Bd7 18.g4 Bc6 19.Rad1 Nh6 20.Qg3 e5 21.Be3 f5 
22.Bxh6 Bxh6 23.gxf5 Bf4 24.Rxf4 exf4 25.Qxf4 Bxe4 26.Bxe4 Qf6 27.Kh1 gxf5
28.Rg1+ Kh8 29.Rg5 Re5 30.Rxf5 Rxf5 31.Qxf5 Qxf5 32.Bxf5 Rf8 33.Be4 Rf2 
34.Bxb7 Rxb2 35.Bd5 Kg7 36.a4 Kf6 37.c4 Ke5 38.Be4 h5 39.h4 Ra2 40.Bg6 Kf4
41.Kg1 Kg3 42.Kf1 Kxh4 43.Be4 Kg4 44.c5 Kf4 45.c6 Ke5 46.Bg6 h4 47.c7 Ra1+
48.Kg2 Rc1 49.Kh3 Rxc7 50.Kxh4 Rd7 51.Kh3 Rd4 52.Be8 Rxd3+ 53.Kg2 Kf4 54.
Bc6 Rd2+ 55.Kf1 Ke3 56.Bb5 Rc2 57.Bd7 Rf2+ 58.Ke1 a6 59.Be8 Rf8 60.Bd7 Rd8
61.Be6 Rd4 62.a5 Ra4 63.Kd1 Rxa5 64.Kc2 Kd4 65.Kb3 Kc5 66.Bd7 Kb6 67.Kb4 
Rd5 68.Be8 Rd4+ 69.Ka3 Ka5 70.Bg6 Rg4 71.Bf5 Rg3+ 72.Kb2 Kb4 73.Be4 Re3 
74.Bf5 Re2+ 75.Ka1 Ka3 76.Bg6 Ra2+ 77.Kb1 Rg2 78.Bd3 Rg1+ 79.Kc2 a5 80.Bc4
Kb4 81.Be6 Ka3 82.Bf7 Rg7 83.Be6 Re7 84.Bg8 Rb7 85.Bd5 Rb2+ 86.Kc1 Rb5 87.
Be6 a4 88.Bf7 Rb3 89.Kc2 Ka2 90.Be6 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Bertona, Fernando"]
[Black "Giaccio, Alfredo"]
[Result "1/2-1/2"]
[ECO "C07"]
[EventDate "1990.??.??"]
[PlyCount "62"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.dxc5 Bxc5 6.Bd3 Nf6 7.Qe2 Nc6 8.exd5 
Nxd5 9.Ne4 Ba7 10.a3 Qc7 11.g3 h6 12.c4 Nde7 13.Nc3 e5 14.Nd5 Nxd5 15.cxd5
Qa5+ 16.Bd2 Qxd5 17.Be4 Qb5 18.Bxc6+ Qxc6 19.Rc1 Qd5 20.Qxe5+ Be6 21.O-O 
O-O 22.Bc3 f6 23.Qxd5 Bxd5 24.Nd4 Rfe8 25.Rfe1 g6 26.Ne2 Kf7 27.Bd4 Bb8 
28.Nc3 Rxe1+ 29.Rxe1 Bc6 30.Bc5 Be5 31.f4 Bxc3 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Mercado, Osvaldo"]
[Black "Amura, Claudia"]
[Result "1/2-1/2"]
[ECO "B08"]
[EventDate "1990.??.??"]
[PlyCount "86"]

1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3 g6 5.Be2 Bg7 6.O-O O-O 7.a4 Qc7 8.h3 e5 9.
a5 Nbd7 10.dxe5 dxe5 11.Be3 Nh5 12.Qc1 Nf4 13.Rd1 Nxe2+ 14.Nxe2 Re8 15.Nd2
Bf8 16.Nc3 f5 17.f3 f4 18.Bf2 Bc5 19.Nc4 Bxf2+ 20.Kxf2 Nf8 21.Rd3 Ne6 22.
Na4 Qe7 23.Qd2 Qg5 24.Kf1 b5 25.axb6 Ba6 26.Qc3 Bxc4 27.Qxc4 axb6 28.Qxc6 
Nd4 29.Qd5+ Kh8 30.Rxd4 Red8 31.Rdd1 Rxd5 32.exd5 e4 33.fxe4 f3 34.gxf3 
Qg3 35.Ke2 Qg2+ 36.Ke3 Qxc2 37.Rd2 Qc4 38.Rd4 Qb5 39.Ra3 Rf8 40.Rd1 Qa5 
41.Nc3 Qc5+ 42.Ke2 Qc4+ 43.Ke3 Qc5+ 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Rodriguez, Andres"]
[Black "Pardo, Marco"]
[Result "1-0"]
[ECO "B07"]
[EventDate "1990.??.??"]
[PlyCount "81"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.h4 c6 6.h5 gxh5 7.Qd3 Nbd7 8.Bxh5 
Qa5 9.Be2 e5 10.Bh6 Rg8 11.Bxg7 Rxg7 12.g3 d5 13.Kf1 exd4 14.Qxd4 c5 15.
Qd3 d4 16.Nd5 Qd8 17.Nf3 b6 18.c3 dxc3 19.Qxc3 Kf8 20.Rh4 Bb7 21.Rd1 Nxd5 
22.exd5 Qf6 23.Rf4 Qxc3 24.bxc3 Rd8 25.Rf5 f6 26.Bb5 Rf7 27.g4 Kg7 28.Kg2 
Nf8 29.Kg3 Ng6 30.Rh5 Bc8 31.Rdh1 Nf8 32.Bd3 Kg8 33.Nh4 Rg7 34.f3 Rd6 35.
Ng2 Bb7 36.Ne3 Bc8 37.Rh6 Rf7 38.R1h5 a6 39.Nc4 Rd8 40.Nxb6 Bb7 41.Be4 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Amura, Claudia"]
[Black "Bertona, Fernando"]
[Result "1-0"]
[ECO "D00"]
[EventDate "1990.??.??"]
[PlyCount "113"]

1.d4 d5 2.Bg5 h6 3.Bh4 c5 4.c3 Qb6 5.Qd2 cxd4 6.cxd4 Nc6 7.e3 Bf5 8.Nc3 e6
9.Nf3 g5 10.Bg3 Nf6 11.a3 Be7 12.Ne5 Rc8 13.f3 Na5 14.Na4 Qb3 15.Qxa5 
Qxe3+ 16.Be2 Rc2 17.Qb5+ Kf8 18.Nc3 Rxc3 19.Bf2 Rc1+ 20.Rxc1 Qxc1+ 21.Bd1 
Bc2 22.Ke2 Bxd1+ 23.Rxd1 Qc7 24.Rd3 Kg7 25.Rc3 Qb8 26.Rb3 Bd6 27.Bg3 Nh5 
28.Qd7 Nxg3+ 29.hxg3 Qc7 30.Qxc7 Bxc7 31.Rxb7 Rc8 32.Kd3 a5 33.g4 Bxe5 34.
dxe5 Rc5 35.b3 Kg6 36.a4 Rc1 37.Rb5 Rd1+ 38.Kc2 Rg1 39.Rxa5 Rxg2+ 40.Kd3 
h5 41.gxh5+ Kxh5 42.b4 Rf2 43.Ke3 Rb2 44.b5 Kh4 45.Ra7 Rb3+ 46.Ke2 Rb4 47.
Kd3 Rb3+ 48.Kc2 Rxf3 49.b6 Rf4 50.Ra5 Rc4+ 51.Kd3 Rc8 52.b7 Rb8 53.Rb5 g4 
54.a5 g3 55.a6 g2 56.Rb1 Rg8 57.a7 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Pardo, Marco"]
[Black "Barahona, Daniel"]
[Result "1/2-1/2"]
[ECO "E92"]
[EventDate "1990.??.??"]
[PlyCount "121"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.dxe5 dxe5 8.Qxd8 
Rxd8 9.Bg5 c6 10.Nxe5 Re8 11.O-O-O Na6 12.f4 Nc5 13.Bf3 a5 14.Rhe1 Be6 15.
Bh4 Rac8 16.Kb1 h6 17.Bf2 Ncd7 18.Nxd7 Nxd7 19.Bd4 Bf8 20.Be2 Nc5 21.g4 
Rcd8 22.f5 Bc8 23.Bf3 Rxd4 24.Rxd4 gxf5 25.gxf5 Bxf5 26.Red1 Be6 27.Kc2 
Be7 28.b3 Bf6 29.R4d2 Na6 30.a3 Nc5 31.Rg2+ Kf8 32.Rdg1 Ke7 33.Ne2 a4 34.
b4 Nb3 35.c5 Rd8 36.Rd1 Rxd1 37.Kxd1 Bb2 38.Kc2 Bxa3 39.Kc3 Bc1 40.Nxc1 
Nxc1 41.Rg1 Nb3 42.Bd1 Kf6 43.Rf1+ Ke5 44.Bc2 Nd4 45.Ra1 Nxc2 46.Kxc2 Bb3+
47.Kd3 f6 48.Rf1 Be6 49.Ra1 Bb3 50.Ke3 Bc2 51.Ra3 Bb3 52.Ra1 Bc2 53.Ra2 
Bb3 54.Rb2 Bc4 55.Rc2 Be6 56.Rc3 Bb3 57.Rd3 Be6 58.Rc3 Bf7 59.Rd3 Be6 60.
Rc3 Bf7 61.Rd3 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Rodrigues, Adriano"]
[Black "Mercado, Osvaldo"]
[Result "1/2-1/2"]
[ECO "C06"]
[EventDate "1990.??.??"]
[PlyCount "148"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.c3 c5 6.Bd3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.Nf3 Bd6 11.O-O O-O 12.Ng3 Qb6 13.Re1 Bd7 14.Bg5 h6 15.Bxf6 
Rxf6 16.Nh5 Rff8 17.Bc2 Be8 18.Ng3 Rf6 19.Re3 Rc8 20.a3 Bxg3 21.hxg3 Bh5 
22.Rc1 Rcf8 23.Qd3 Bxf3 24.Qh7+ Kf7 25.Rxf3 Rxf3 26.gxf3 Qxd4 27.Qg6+ Ke7 
28.f4 Rf7 29.b4 Qf6 30.Qd3 g5 31.b5 Nd4 32.Bd1 Kf8 33.Bh5 Re7 34.fxg5 hxg5
35.Kg2 e5 36.Bg4 e4 37.Qe3 Rf7 38.a4 b6 39.Bh5 Rd7 40.Qa3+ Kg7 41.Rc8 Kh6 
42.Bg4 Rf7 43.Qe3 Nf5 44.Qe1 Kg7 45.Rc6 Qb2 46.Bxf5 Rxf5 47.Qc3+ Qxc3 48.
Rxc3 Rf7 49.Rc6 Rd7 50.Kf1 Kf7 51.Ke2 d4 52.Kd2 d3 53.Rc4 Re7 54.Rc6 Re6 
55.Rc7+ Re7 56.Rc6 Kg7 57.Ke3 Rd7 58.Kd2 Rf7 59.Ke3 Rf3+ 60.Kxe4 d2 61.Rd6
Rxf2 62.Ke3 Rg2 63.Rxd2 Rxd2 64.Kxd2 Kf6 65.Ke3 Kf5 66.Kf3 g4+ 67.Ke3 Ke5 
68.Kd3 Kd5 69.Ke3 Ke5 70.Kd3 Kd5 71.Ke3 Kc4 72.Kf4 Kb4 73.Kxg4 Kxa4 74.Kf5
Kxb5 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Rodriguez, Pedro Cesar"]
[Black "Rodriguez, Andres"]
[Result "1-0"]
[ECO "A37"]
[EventDate "1990.??.??"]
[PlyCount "99"]

1.Nf3 c5 2.c4 Nc6 3.Nc3 g6 4.g3 Bg7 5.Bg2 e5 6.O-O Nge7 7.d3 O-O 8.a3 d6 
9.Rb1 a5 10.Nd5 Nxd5 11.cxd5 Ne7 12.Nd2 a4 13.b4 axb3 14.Qxb3 Rb8 15.a4 
Bg4 16.e4 h5 17.Nc4 Nc8 18.Bd2 Bf6 19.Na5 Na7 20.Nxb7 Qe7 21.a5 Be2 22.
Rfe1 Bxd3 23.Qxd3 Rxb7 24.Rxb7 Qxb7 25.Rb1 Qa8 26.Qa6 Re8 27.Qxd6 Be7 28.
Qxe5 Bf8 29.Qf6 Bg7 30.Qa6 Bd4 31.Rb7 c4 32.Rb4 Qc8 33.Qxc4 Bc5 34.Ra4 Qd7
35.Ra1 Rc8 36.Qd3 Nc6 37.Qb5 Qd6 38.Bf4 Qf6 39.Rd1 Ne5 40.Bxe5 Bxf2+ 41.
Kh1 Qxe5 42.Rf1 Rb8 43.Qd7 h4 44.Rxf2 Rb1+ 45.Bf1 Qxe4+ 46.Kg1 Rxf1+ 47.
Rxf1 Qe3+ 48.Kg2 Qe2+ 49.Rf2 Qe4+ 50.Kh3 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Barahona, Daniel"]
[Black "Rodriguez, Pedro Cesar"]
[Result "0-1"]
[ECO "B17"]
[EventDate "1990.??.??"]
[PlyCount "44"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3 Qc7 7.Be2 e6 8.O-O 
Bd6 9.c4 O-O 10.Bd2 b6 11.Qc2 Bb7 12.Rad1 c5 13.Bc3 cxd4 14.Nxd4 a6 15.b3 
Rac8 16.a4 Rfd8 17.Rfe1 Ne5 18.Nf1 Ng6 19.h3 Ne4 20.Nd2 Bh2+ 21.Kf1 Nxf2 
22.Kxf2 Qg3+ 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Bertona, Fernando"]
[Black "Rodrigues, Adriano"]
[Result "0-1"]
[ECO "B33"]
[EventDate "1990.??.??"]
[PlyCount "102"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Qb6 6.Nb3 e6 7.Bd3 a6 8.O-O 
Be7 9.Bg5 O-O 10.Kh1 d6 11.f4 Qc7 12.Qf3 h6 13.Bh4 Rb8 14.g4 b5 15.g5 hxg5
16.Bxg5 b4 17.Ne2 d5 18.Bxf6 Bxf6 19.e5 Nxe5 20.fxe5 Bxe5 21.Ned4 f5 22.
Rae1 Rb6 23.Re2 Rf6 24.Rfe1 Bf4 25.Nc5 e5 26.Qxd5+ Kh7 27.Bc4 Kh6 28.Ndb3 
Rbc6 29.Rg2 a5 30.Reg1 g5 31.Qg8 a4 32.Rxg5 Bxg5 33.Qxg5+ Kh7 34.Qg8+ Kh6 
35.Qg5+ Kh7 36.Qg8+ Kh6 37.Be2 Rg6 38.Qh8+ Qh7 39.Qf8+ Qg7 40.Rxg6+ Rxg6 
41.Qxg7+ Kxg7 42.Na5 e4 43.Nc4 Kf6 44.Nd6 Be6 45.Bh5 Rh6 46.Be2 Ke5 47.
Nxe6 Kxd6 48.Ng5 Kd5 49.Kg2 Kd4 50.Bd1 Ke3 51.c3 a3 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Giaccio, Alfredo"]
[Black "Amura, Claudia"]
[Result "1-0"]
[ECO "B22"]
[EventDate "1990.??.??"]
[PlyCount "103"]

1.e4 c5 2.Nf3 e6 3.c3 Nf6 4.e5 Nd5 5.d4 cxd4 6.cxd4 d6 7.Nc3 dxe5 8.Nxe5 
Bb4 9.Bd2 O-O 10.Bd3 Nd7 11.Qe2 Nxe5 12.dxe5 Qa5 13.Rc1 Bd7 14.O-O Bc6 15.
Qg4 Nxc3 16.bxc3 Ba3 17.Rce1 Qd5 18.Qh3 g6 19.Bg5 f5 20.Bf6 Rf7 21.Rd1 Qc5
22.Bc2 Bd5 23.Bb3 Bc4 24.Rd4 Bxb3 25.axb3 Qf8 26.b4 a5 27.Rfd1 axb4 28.
cxb4 Bxb4 29.Rd8 Rxd8 30.Rxd8 Rxf6 31.Rxf8+ Rxf8 32.Qb3 Be7 33.Qxe6+ Rf7 
34.Qc4 Bf8 35.g3 b6 36.f4 Bc5+ 37.Kg2 Kf8 38.h4 Ra7 39.h5 Kg7 40.Qe6 Kh6 
41.hxg6 hxg6 42.g4 fxg4 43.f5 Rg7 44.f6 Ra7 45.Qxg4 Ra2+ 46.Kf1 Rf2+ 47.
Ke1 g5 48.Qd7 Kg6 49.Qe8+ Kf5 50.f7 Ke4 51.e6 Ke3 52.e7 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Mercado, Osvaldo"]
[Black "Pardo, Marco"]
[Result "1-0"]
[ECO "B08"]
[EventDate "1990.??.??"]
[PlyCount "83"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4 7.Be3 Nc6 8.Qd2 e5
9.d5 Ne7 10.Rfd1 Bd7 11.Rac1 Nh5 12.Ne1 f5 13.Bxh5 gxh5 14.Bg5 f4 15.Qe2 
Qe8 16.Nb1 h4 17.Bxe7 Qxe7 18.c4 Rf6 19.h3 Raf8 20.f3 Rg6 21.Kh1 Kh8 22.
Qf2 Rg8 23.c5 dxc5 24.Rxc5 Qd8 25.Rdc1 c6 26.dxc6 Bxc6 27.R5c2 Qa5 28.Nc3 
Bf8 29.a3 Bc5 30.Qxh4 Bd4 31.Qe7 R6g7 32.Qf6 Qa6 33.Ne2 Be3 34.Ra1 Bd4 35.
h4 Qa5 36.Nxd4 exd4 37.Qxd4 Qh5 38.Qf6 h6 39.b4 Kh7 40.Rc5 Qg6 41.Qxg6+ 
Rxg6 42.Rd1 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Pardo, Marco"]
[Black "Bertona, Fernando"]
[Result "0-1"]
[ECO "D31"]
[EventDate "1990.??.??"]
[PlyCount "68"]

1.d4 d5 2.c4 e6 3.cxd5 exd5 4.Nc3 c6 5.Qc2 g6 6.Nf3 Bf5 7.Qb3 Qb6 8.Qxb6 
axb6 9.Bf4 Nf6 10.h3 Bb4 11.Nd2 Nbd7 12.g4 Be6 13.Bg2 O-O 14.O-O b5 15.
Rfe1 Nb6 16.a3 Be7 17.b4 Ra6 18.Ra2 Rfa8 19.Rea1 Ne4 20.Ndxe4 dxe4 21.Rc2 
f5 22.gxf5 gxf5 23.Kh2 Rxa3 24.Rg1 Kf7 25.f3 Rxc3 26.Rxc3 Nd5 27.Re3 Nxe3 
28.Bxe3 Bd6+ 29.Kh1 f4 30.Bxf4 Bxf4 31.fxe4 Ke7 32.d5 Bd7 33.h4 Be5 34.Bf3
Ra1 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Rodrigues, Adriano"]
[Black "Giaccio, Alfredo"]
[Result "0-1"]
[ECO "C15"]
[EventDate "1990.??.??"]
[PlyCount "68"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 dxe4 6.Qg4 Nf6 7.Qxg7 Rg8 8.
Qh6 Nbd7 9.Bg5 c5 10.Ne2 Rg6 11.Qh4 h6 12.Bxh6 Rg4 13.Qh3 b6 14.Be3 Qe7 
15.f3 Rg8 16.Nc1 Bb7 17.Be2 O-O-O 18.a4 cxd4 19.cxd4 e5 20.O-O Rh8 21.Qg3 
Rdg8 22.Qf2 exd4 23.Bxd4 Qd6 24.f4 e3 25.Bxe3 Rxg2+ 26.Qxg2 Bxg2 27.Kxg2 
Qe6 28.Rf3 Nd5 29.Bf2 Nxf4+ 30.Rxf4 Qh3+ 31.Kg1 Qxh2+ 32.Kf1 Qxf4 33.Ba6+ 
Kb8 34.Nd3 Rh1+ 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Rodriguez, Andres"]
[Black "Barahona, Daniel"]
[Result "1-0"]
[ECO "C63"]
[EventDate "1990.??.??"]
[PlyCount "73"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Ng3 Bg4 7.O-O Nf6 8.Re1 
Bd6 9.Nxe5 Bxe5 10.Bxc6+ Kf7 11.f3 Bxg3 12.hxg3 bxc6 13.fxg4 Re8 14.Rf1 
Kg8 15.d3 Qd7 16.Rf4 Qe6 17.Bd2 Qe2 18.Bc3 Qxd1+ 19.Rxd1 Re2 20.Rdf1 h6 
21.R1f2 Rxf2 22.Kxf2 Nd7 23.Ra4 a6 24.Ra5 c5 25.d4 cxd4 26.Bxd4 c6 27.Ke3 
Kf7 28.b4 g6 29.a4 h5 30.gxh5 gxh5 31.Kd2 Ke7 32.b5 c5 33.Be3 d4 34.Bf4 
Nb6 35.Rxa6 Rxa6 36.bxa6 Nxa4 37.Bc7 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Rodriguez, Pedro Cesar"]
[Black "Mercado, Osvaldo"]
[Result "1-0"]
[ECO "B38"]
[EventDate "1990.??.??"]
[PlyCount "111"]

1.Nf3 c5 2.c4 g6 3.d4 cxd4 4.Nxd4 Bg7 5.e4 Nc6 6.Be3 Nf6 7.Nc3 O-O 8.Be2 
d6 9.O-O Bd7 10.Rc1 Qa5 11.b3 Rfc8 12.f3 a6 13.Qd2 Nxd4 14.Bxd4 b5 15.Rfd1
Ne8 16.Bxg7 Nxg7 17.Nd5 Qd8 18.Qg5 f6 19.Qe3 Rc6 20.Nb4 Rcc8 21.Nd5 Rc6 
22.c5 dxc5 23.Rxc5 Rd6 24.Rcc1 e5 25.Qc5 Ne8 26.Qe3 Kg7 27.Rd2 Be6 28.Rcd1
g5 29.Kf2 Rc8 30.a4 bxa4 31.bxa4 Qa5 32.Nxf6 Kxf6 33.Rxd6 Nxd6 34.Rxd6 
Qxa4 35.Rxa6 Qc2 36.h4 h6 37.hxg5+ hxg5 38.Qb6 Qc5+ 39.Qxc5 Rxc5 40.g3 Rc3
41.f4 gxf4 42.gxf4 Ke7 43.f5 Bf7 44.f6+ Kd8 45.Bg4 Rb3 46.Ra7 Rb2+ 47.Kg3 
Rb3+ 48.Kh4 Bc4 49.Ra8+ Kc7 50.Rc8+ Kd6 51.Rxc4 Rb1 52.f7 Rf1 53.Bf5 Ke7 
54.Rc7+ Kf8 55.Be6 Rf2 56.Rc8+ 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Amura, Claudia"]
[Black "Rodrigues, Adriano"]
[Result "1/2-1/2"]
[ECO "A86"]
[EventDate "1990.??.??"]
[PlyCount "41"]

1.d4 f5 2.c4 Nf6 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.Nh3 c6 7.Nf4 Na6 8.O-O Nc7 
9.b4 d6 10.Qb3 e5 11.c5+ d5 12.dxe5 Ng4 13.Bb2 Kh8 14.Nd3 Qe7 15.f4 Ne3 
16.Rf2 d4 17.Nd1 Be6 18.Qa4 Nxg2 19.Rxg2 Bd5 20.Rf2 b5 21.Qa3 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Bertona, Fernando"]
[Black "Rodriguez, Pedro Cesar"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1990.??.??"]
[PlyCount "125"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Bd3 Ndf6 6.c3 Nxe4 7.Bxe4 Nf6 8.
Bc2 Bg4 9.Ne2 e6 10.Bf4 Bd6 11.Qd2 O-O 12.f3 Bh5 13.Bxd6 Qxd6 14.Nf4 Bg6 
15.Nxg6 hxg6 16.O-O-O c5 17.dxc5 Qxc5 18.h4 Qa5 19.Qg5 Qxa2 20.h5 gxh5 21.
g4 Rfd8 22.gxh5 Rd5 23.Rxd5 Qxd5 24.Qh4 Qxf3 25.Kb1 Qg4 26.Qh2 Qg5 27.h6 
Qxh6 28.Qg2 Qe3 29.Qh2 Qh6 30.Qg2 Qe3 31.Qxb7 Re8 32.Qg2 Qe5 33.Qh3 Kf8 
34.Qh8+ Ke7 35.Qxg7 Rg8 36.Qh6 Rb8 37.Kc1 Qa5 38.Qh2 Qb6 39.Bd1 Qe3+ 40.
Kb1 Rd8 41.Bc2 Qd2 42.Qh4 Rb8 43.Qg3 Qd6 44.Qf2 Qb6 45.Qxb6 Rxb6 46.Rh4 
Rb7 47.Bd3 Nd5 48.Kc2 Kd6 49.Ra4 f5 50.b4 Ke5 51.Kb3 Rc7 52.c4 Nb6 53.Ra1 
Kd4 54.Rd1 Ke3 55.c5 Nd7 56.Bc4 f4 57.Re1+ Kf2 58.Re2+ Kg3 59.Rxe6 f3 60.
Kc3 a5 61.c6 axb4+ 62.Kxb4 Nb6 63.Kb5 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Giaccio, Alfredo"]
[Black "Pardo, Marco"]
[Result "1-0"]
[ECO "A04"]
[EventDate "1990.??.??"]
[PlyCount "77"]

1.Nf3 f5 2.e4 fxe4 3.Ng5 Nf6 4.d3 d6 5.dxe4 h6 6.Nf3 Bg4 7.Qd3 e5 8.Be3 
Nc6 9.Nbd2 Qd7 10.c3 Be7 11.Qc2 O-O 12.O-O-O Be6 13.h3 d5 14.Bb5 Bd6 15.
Nh4 Qf7 16.exd5 Nxd5 17.g4 Nf4 18.Rde1 Ne7 19.Rh2 Ned5 20.Ne4 a6 21.Bf1 b5
22.Ng3 b4 23.c4 b3 24.axb3 Nb4 25.Qe4 a5 26.Ngf5 Rfe8 27.Bd2 Bd7 28.Rd1 
Bc6 29.Qe3 Ne6 30.Nxd6 cxd6 31.Nf5 Rad8 32.Qg3 Nc5 33.Bxh6 Ne4 34.Qh4 d5 
35.Bxg7 Qg6 36.Bxe5 dxc4 37.Rxd8 Rxd8 38.Ne7+ Kf7 39.Bxc4+ 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Mercado, Osvaldo"]
[Black "Rodriguez, Andres"]
[Result "0-1"]
[ECO "C05"]
[EventDate "1990.??.??"]
[PlyCount "62"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 b6 6.Ngf3 Ba6 7.Bxa6 Nxa6 8.O-O 
c5 9.c3 b5 10.Ne1 Qb6 11.Nb3 Nc7 12.Be3 c4 13.Nd2 b4 14.cxb4 Qxb4 15.b3 
Nb6 16.Rc1 Rc8 17.bxc4 dxc4 18.Qe2 Ncd5 19.Ne4 Be7 20.Nf3 c3 21.Rc2 Nc4 
22.Bc1 Qa5 23.Be3 Qb4 24.Ne1 Na3 25.Rc1 Qc4 26.Nd3 Nb5 27.Rfd1 Nb4 28.Nxc3
Nxc3 29.Rxc3 Qxc3 30.Rc1 Qxd3 31.Rxc8+ Bd8 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Barahona, Daniel"]
[Black "Mercado, Osvaldo"]
[Result "1-0"]
[ECO "A08"]
[EventDate "1990.??.??"]
[PlyCount "87"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.g3 c5 5.Bg2 Be7 6.Ngf3 Nc6 7.O-O O-O 8.e5 Nd7 
9.Re1 f6 10.exf6 Nxf6 11.Bh3 Qd6 12.Qe2 Nd8 13.Ng5 h6 14.Nxe6 Re8 15.Nf4 
Bxh3 16.Nxh3 Nc6 17.c3 Bf8 18.Qf1 d4 19.Ne4 Nxe4 20.dxe4 dxc3 21.bxc3 Ne5 
22.f4 Nd3 23.Re2 c4 24.e5 Qc6 25.Be3 Rad8 26.Qg2 Rd5 27.Bxa7 b6 28.Kh1 Bc5
29.Rb1 Kf7 30.a4 Red8 31.a5 bxa5 32.Bxc5 Nxc5 33.Nf2 a4 34.h3 a3 35.Kh2 
Ra8 36.Ng4 Nd3 37.Ne3 Rc5 38.e6+ Kf8 39.Qxc6 Rxc6 40.Nf5 g6 41.e7+ Kf7 42.
Nxh6+ Ke8 43.f5 gxf5 44.Nxf5 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Pardo, Marco"]
[Black "Amura, Claudia"]
[Result "1/2-1/2"]
[ECO "D89"]
[EventDate "1990.??.??"]
[PlyCount "95"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5 8.Ne2 
O-O 9.O-O Nc6 10.Be3 Bg4 11.f3 Na5 12.Bd3 cxd4 13.cxd4 Be6 14.Rc1 Bxa2 15.
Qa4 Be6 16.d5 Bd7 17.Qb4 e6 18.Nc3 b6 19.Rfd1 Qh4 20.g3 Qf6 21.Be2 Rfc8 
22.Bd4 e5 23.Be3 Bf8 24.d6 Rc6 25.Nd5 Qxd6 26.Qxd6 Rxd6 27.Nf6+ Rxf6 28.
Rxd7 Nb3 29.Rcc7 Bc5 30.Bxc5 Nxc5 31.Rxa7 Rxa7 32.Rxa7 Rd6 33.Kf2 Rd7 34.
Ra8+ Kg7 35.Ke3 f5 36.exf5 gxf5 37.Re8 Kf6 38.Rf8+ Rf7 39.Rb8 Rb7 40.Rf8+ 
Kg6 41.Bb5 Re7 42.Rb8 Re6 43.Rd8 e4 44.f4 Rf6 45.Bc4 Ne6 46.Rb8 Nf8 47.h3 
h5 48.Be2 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Rodriguez, Andres"]
[Black "Bertona, Fernando"]
[Result "1-0"]
[ECO "B45"]
[EventDate "1990.??.??"]
[PlyCount "103"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Nxc6 bxc6 7.e5 Nd5 8.Ne4
f5 9.exf6 Nxf6 10.Nd6+ Bxd6 11.Qxd6 Ba6 12.Bxa6 Qa5+ 13.Bd2 Qxa6 14.Bb4 
Nd5 15.O-O-O O-O-O 16.Ba3 Rhf8 17.Qg3 Rf5 18.Kb1 Qe2 19.Bc5 Qb5 20.Bxa7 
Rg5 21.Qf3 Nb4 22.h4 Rg6 23.a3 Qa4 24.Bb6 Qxc2+ 25.Ka1 Nd5 26.Bxd8 Kxd8 
27.Rc1 Qa4 28.g3 Rf6 29.Qe2 Ke7 30.Rhd1 Rf8 31.Qc2 Qg4 32.Qc5+ Ke8 33.Rd4 
Qe2 34.Ra4 Kf7 35.Ra7 Nf6 36.Qe3 Qb5 37.h5 Rb8 38.Qc3 h6 39.f3 Qxh5 40.
Qxc6 Qe5 41.Qc3 Qxg3 42.Qc7 Qxc7 43.Raxc7 Ke7 44.b4 Nd5 45.Rc8 Rb7 46.Kb2 
h5 47.Kb3 h4 48.Rg1 h3 49.Rxg7+ Kd6 50.Rc4 Ne3 51.Rd4+ Kc6 52.Rh7 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Rodriguez, Pedro Cesar"]
[Black "Giaccio, Alfredo"]
[Result "0-1"]
[ECO "D41"]
[EventDate "1990.??.??"]
[PlyCount "82"]

1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 exd5 6.Bg5 Be7 7.dxc5 Nc6 8.e3 
Be6 9.Bb5 Bxc5 10.Nd4 Rc8 11.Qa4 O-O 12.Nxc6 bxc6 13.Bxc6 Qb6 14.Bxf6 Rxc6
15.Be5 Bxe3 16.O-O Rc4 17.Qd1 Bd4 18.Bxd4 Rxd4 19.Qe2 Rb4 20.b3 Rd8 21.
Rfe1 d4 22.Na4 Qa5 23.Nb2 h6 24.Nd3 Rb6 25.Rac1 Bf5 26.Qe7 Rf6 27.b4 Qb6 
28.Nc5 d3 29.Rcd1 Rd5 30.a3 a5 31.Qe3 axb4 32.axb4 Qxb4 33.Qe8+ Kh7 34.Ne4
Re6 35.Qxf7 Rxe4 36.Rf1 Qd4 37.Rb1 d2 38.Rb4 Qxb4 39.Qxd5 Be6 40.Qd8 Qd4 
41.Qa8 d1=Q 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Amura, Claudia"]
[Black "Rodriguez, Pedro Cesar"]
[Result "1-0"]
[ECO "D20"]
[EventDate "1990.??.??"]
[PlyCount "49"]

1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 Nf6 5.Nc3 e6 6.Bxc4 exd5 7.exd5 a6 8.a4 Bd6
9.Bg5 O-O 10.Nge2 Bf5 11.h3 Nbd7 12.f4 Qe8 13.g4 Be4 14.O-O h6 15.Bh4 Nb6 
16.Ba2 c4 17.Bxf6 gxf6 18.Qd4 Bd3 19.Qxb6 Qe7 20.Qf2 Bc5 21.Nd4 Bxf1 22.
Kxf1 b5 23.Nf5 Qc7 24.d6 Bxd6 25.Nd5 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Bertona, Fernando"]
[Black "Barahona, Daniel"]
[Result "1-0"]
[ECO "C63"]
[EventDate "1990.??.??"]
[PlyCount "79"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d3 fxe4 5.dxe4 Nf6 6.O-O d6 7.Nc3 Be7 8.Qd3 
Bg4 9.h3 Bxf3 10.Qxf3 O-O 11.Qd3 Kh8 12.Be3 Nh5 13.Nd5 Nf4 14.Qc4 Nxd5 15.
exd5 Nb8 16.Qg4 c6 17.Bd3 Nd7 18.dxc6 bxc6 19.Qe4 Nf6 20.Qxc6 d5 21.Rad1 
Rb8 22.Bc1 e4 23.Be2 Rc8 24.Qa4 Bc5 25.c3 Qb6 26.b4 Bxf2+ 27.Rxf2 Ng4 28.
Bxg4 Qxf2+ 29.Kh1 Rxc3 30.Rg1 d4 31.Qxa7 Rc2 32.a4 Qf6 33.b5 e3 34.Bxe3 
dxe3 35.Qxe3 Ra2 36.Qb3 Rb2 37.Qc4 Qf2 38.a5 Rc2 39.Qe4 Rc5 40.Bd7 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Giaccio, Alfredo"]
[Black "Rodriguez, Andres"]
[Result "1/2-1/2"]
[ECO "C15"]
[EventDate "1990.??.??"]
[PlyCount "135"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 dxe4 6.Qg4 Nf6 7.Qxg7 Rg8 8.
Qh6 Nbd7 9.h3 b6 10.g3 Bb7 11.Bg2 Qc8 12.Ne2 Bd5 13.O-O Qb7 14.Nf4 O-O-O 
15.a4 Qc6 16.Ra3 a5 17.g4 Rh8 18.Re1 Rde8 19.Kh1 Qd6 20.Nxd5 exd5 21.g5 
Ng8 22.Qxd6 cxd6 23.Bf4 h6 24.gxh6 Re6 25.c4 Ndf6 26.Rb3 dxc4 27.Rb5 d5 
28.Reb1 Kb7 29.Rxa5 Nh5 30.Be5 f6 31.Bh2 Ne7 32.Rab5 Rxh6 33.a5 f5 34.Be5 
Rc6 35.Bf1 f4 36.Kh2 Ka6 37.Rxb6+ Rxb6 38.Rxb6+ Rxb6 39.axb6 Kxb6 40.h4 
Ng8 41.c3 Ngf6 42.Kh3 Kb5 43.Be2 Ka4 44.Bxh5 Nxh5 45.Kg4 f3 46.Bf4 Nxf4 
47.Kxf4 Kb3 48.h5 Kxc3 49.h6 Kd2 50.h7 c3 51.h8=Q c2 52.Qg8 c1=Q 53.Qxd5 
Kd3+ 54.Kf5 Qc8+ 55.Kg5 Qc4 56.Qa5 Qxd4 57.Qe1 Qb2 58.Qe3+ Kc4 59.Qxe4+ 
Kc5 60.Qe7+ Kd5 61.Qf7+ Kd6 62.Qxf3 Qg7+ 63.Kh4 Qh7+ 64.Kg3 Qb1 65.Qf6+ 
Kd7 66.f4 Qg1+ 67.Kh4 Ke8 68.Qe6+ 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Rodrigues, Adriano"]
[Black "Pardo, Marco"]
[Result "1-0"]
[ECO "A80"]
[EventDate "1990.??.??"]
[PlyCount "83"]

1.d4 f5 2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 gxf6 5.e3 Be6 6.Qh5+ Bf7 7.Qxf5 e6 8.Qh3
Nd7 9.O-O-O c6 10.e4 Qa5 11.exd5 cxd5 12.Bb5 O-O-O 13.Nge2 Bd6 14.f4 Kb8 
15.Kb1 Nb6 16.Qh4 a6 17.Bd3 Nd7 18.Rhf1 h5 19.Nc1 Rhg8 20.Qf2 Rg4 21.g3 
Rg7 22.Be2 Bb4 23.Nb3 Qc7 24.Qe3 Rc8 25.Rf3 Nb6 26.Qd2 Na4 27.Rc1 Bxc3 28.
bxc3 Nxc3+ 29.Kb2 Ne4 30.Qb4 Ka7 31.Re3 Bg6 32.c4 dxc4 33.Bxc4 Qd7 34.Ree1
Bf5 35.Red1 Qd8 36.d5 Rd7 37.Bd3 exd5 38.Nd4 Bh7 39.Qa4 Rd6 40.Rxc8 Qxc8 
41.Nb5+ Kb6 42.Bxe4 1-0

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Barahona, Daniel"]
[Black "Giaccio, Alfredo"]
[Result "1/2-1/2"]
[ECO "C00"]
[EventDate "1990.??.??"]
[PlyCount "28"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.g3 b6 5.Bg2 Bb7 6.Ngf3 dxe4 7.Ng5 Be7 8.Ndxe4 
Nxe4 9.Nxe4 Qc8 10.O-O O-O 11.Qh5 Nd7 12.d4 Nf6 13.Nxf6+ Bxf6 14.Bxb7 Qxb7
1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Mercado, Osvaldo"]
[Black "Bertona, Fernando"]
[Result "0-1"]
[ECO "B54"]
[EventDate "1990.??.??"]
[PlyCount "66"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 e5 5.Nf3 Nf6 6.Nc3 h6 7.Bc4 Be7 8.h3 O-O
9.Be3 Be6 10.Bb3 Nc6 11.Qd2 Na5 12.g4 Nxb3 13.axb3 d5 14.exd5 Nxd5 15.Nxe5
Nxe3 16.Qxd8 Nxc2+ 17.Kd2 Rfxd8+ 18.Kxc2 a6 19.Rhd1 f5 20.f3 fxg4 21.hxg4 
Bf6 22.Nc4 Bf7 23.Nd6 Bg6+ 24.Nce4 Rd7 25.f4 Rxd6 26.Rxd6 Bxe4+ 27.Kc1 
Rc8+ 28.Kd2 Bxb2 29.Ra4 Bf3 30.f5 Be5 31.Re6 Bf6 32.Rb6 Bc6 33.Rc4 Bd8 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Rodriguez, Andres"]
[Black "Amura, Claudia"]
[Result "1/2-1/2"]
[ECO "B45"]
[EventDate "1990.??.??"]
[PlyCount "42"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Nxc6 bxc6 7.e5 Nd5 8.Ne4
Qa5+ 9.c3 Ba6 10.f4 Bxf1 11.Rxf1 f5 12.Ng5 Be7 13.Rf3 h6 14.Nh3 O-O-O 15.
Bd2 Qa6 16.Qe2 Qxe2+ 17.Kxe2 g5 18.Rg3 gxf4 19.Nxf4 Nxf4+ 20.Bxf4 Rdg8 21.
Kf3 h5 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Rodriguez, Pedro Cesar"]
[Black "Rodrigues, Adriano"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1990.??.??"]
[PlyCount "55"]

1.Nf3 Nf6 2.d4 c5 3.c4 cxd4 4.Nxd4 Nc6 5.Nc3 g6 6.g3 Bg7 7.Bg2 O-O 8.O-O 
Nxd4 9.Qxd4 d6 10.Bg5 h6 11.Bxf6 Bxf6 12.Qd2 Bg7 13.Rfd1 Be6 14.Bxb7 Rb8 
15.Bd5 Bxd5 16.cxd5 Qa5 17.Rab1 Rfc8 18.Rbc1 Rc5 19.Rc2 Bxc3 20.bxc3 Rbc8 
21.Rb1 Rxd5 22.Qxh6 Rh5 23.Qf4 Rb5 24.Rbc1 Rbc5 25.Qd4 Rc4 26.Qe3 e6 27.
Qd2 d5 28.e3 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Amura, Claudia"]
[Black "Barahona, Daniel"]
[Result "1/2-1/2"]
[ECO "E75"]
[EventDate "1990.??.??"]
[PlyCount "20"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5 
9.exd5 Qa5 10.Nf3 Nbd7 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Giaccio, Alfredo"]
[Black "Mercado, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A34"]
[EventDate "1990.??.??"]
[PlyCount "17"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 e6 4.g3 d5 5.cxd5 exd5 6.d4 b6 7.Bg2 Bb7 8.O-O Be7
9.b3 1/2-1/2

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Pardo, Marco"]
[Black "Rodriguez, Pedro Cesar"]
[Result "0-1"]
[ECO "D24"]
[EventDate "1990.??.??"]
[PlyCount "58"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 c5 5.d5 e6 6.e4 exd5 7.e5 Nfd7 8.Bg5 Be7
9.Bxe7 Qxe7 10.Nxd5 Qd8 11.Bxc4 Nc6 12.Qa4 O-O 13.O-O-O Nd4 14.Rhe1 b5 15.
Bxb5 Nb6 16.Nxb6 Qxb6 17.Nxd4 cxd4 18.Bd3 Be6 19.Kb1 Rab8 20.Rd2 Rfc8 21.
Ka1 Rc5 22.Qxd4 Qa5 23.a3 Rd5 24.Qe3 Rbd8 25.Red1 g6 26.h3 Rd4 27.Qf3 Qa4 
28.Bc2 Qxc2 29.Rxd4 Rxd4 0-1

[Event "15th Pan-American U20 qual. group 1"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Rodrigues, Adriano"]
[Black "Rodriguez, Andres"]
[Result "0-1"]
[ECO "C01"]
[EventDate "1990.??.??"]
[PlyCount "88"]

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Bd3 Bd6 5.Nc3 c6 6.Qf3 Ne7 7.Nge2 Ng6 8.g3 
O-O 9.h4 Re8 10.h5 Nf8 11.Bf4 Na6 12.O-O-O Nb4 13.g4 Bxf4+ 14.Qxf4 Ne6 15.
Qd2 Nxd3+ 16.Qxd3 Qf6 17.Qg3 b5 18.Qh4 Qxh4 19.Rxh4 b4 20.Nb1 Ng5 21.Ng1 
Re4 22.f3 Rf4 23.Rd3 Ba6 24.Re3 Rxd4 25.Rh2 Rf4 26.Nd2 Kf8 27.Ne2 Rf6 28.
a3 Bxe2 29.Rhxe2 a5 30.a4 Ne6 31.Re5 Nc5 32.b3 Re6 33.f4 Rae8 34.Nf3 f6 
35.Rxe6 Rxe6 36.Rxe6 Nxe6 37.f5 Nd8 38.Kd2 Ke7 39.Ke3 Kd6 40.Kf4 h6 41.Nh4
c5 42.Ng6 Nc6 43.Nf8 Nd4 44.Kg3 c4 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Minero, Sergio"]
[Black "Hernandez, Gustavo"]
[Result "0-1"]
[ECO "E11"]
[EventDate "1990.??.??"]
[PlyCount "62"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Bb4+ 5.Bd2 Be7 6.Nf3 O-O 7.O-O c6 8.b3 c5 
9.cxd5 exd5 10.Nc3 Nc6 11.dxc5 Bxc5 12.Bg5 d4 13.Bxf6 Qxf6 14.Ne4 Qe7 15.
Nxc5 Qxc5 16.Rc1 Qd6 17.Qd2 Bf5 18.Rfd1 Rad8 19.Nh4 Bg4 20.h3 Bc8 21.Qc2 
Qf6 22.Rd2 Rd6 23.Qc5 Rfd8 24.Rcd1 h6 25.a3 Be6 26.b4 b6 27.Qc2 d3 28.Rxd3
Nd4 29.Qd2 Bc4 30.Kh2 Bxd3 31.Qxd3 g5 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Oblitas, Carlomagno"]
[Black "Peralta, Eduardo"]
[Result "1-0"]
[ECO "A63"]
[EventDate "1990.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 
9.O-O a6 10.a4 Nbd7 11.Nd2 Rb8 12.Nc4 Ne8 13.a5 Ne5 14.Nb6 Nc7 15.Qb3 Bd7 
16.h3 Bb5 17.f4 Nd7 18.Nc4 Bxc4 19.Qxc4 b5 20.axb6 Nxb6 21.Qd3 Re8 22.e4 
c4 23.Qc2 Qc8 24.Ra5 Nd7 25.Kh2 Rb3 26.Rd1 Nb5 27.Nxb5 axb5 28.Ra3 Rxa3 
29.bxa3 Qc5 30.e5 dxe5 31.d6 exf4 32.Bxf4 c3 33.Rd5 Qc4 34.Qd3 Qa2 35.Rxb5
c2 36.Rb7 Ne5 37.Qd5 Qb1 38.Bxe5 Qxb7 39.Qxb7 c1=Q 40.d7 Rf8 41.Bd6 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Silva, Sebastian"]
[Black "Ribas, Alejandro"]
[Result "1/2-1/2"]
[ECO "D42"]
[EventDate "1990.??.??"]
[PlyCount "52"]

1.d4 Nf6 2.Nf3 e6 3.c4 c5 4.e3 cxd4 5.exd4 d5 6.cxd5 Nxd5 7.Nc3 Be7 8.Bd3 
Nc6 9.O-O O-O 10.Re1 Bf6 11.Be4 Qd6 12.Bg5 Bxg5 13.Nxg5 Nf6 14.d5 exd5 15.
Nxd5 Nxe4 16.Nxe4 Qh6 17.Qf3 Be6 18.Rad1 Rad8 19.Nc5 Bxd5 20.Rxd5 b6 21.
Nd7 Rfe8 22.Red1 Qe6 23.h3 h6 24.Qc3 Rc8 25.Rd6 Qe2 26.Qg3 Re6 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "1"]
[White "Zarnicki, Pablo"]
[Black "Playa, Marcelo"]
[Result "1/2-1/2"]
[ECO "C07"]
[EventDate "1990.??.??"]
[PlyCount "85"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.dxc5 Bxc5 6.Bd3 Nf6 7.O-O O-O 8.Qe2 
Nc6 9.c3 Ba7 10.e5 Nd7 11.Nb3 h6 12.Bc2 Bb8 13.Qd3 f5 14.exf6 Nxf6 15.Nbd4
Ne4 16.Nxc6 bxc6 17.Nd2 Nf6 18.f4 a5 19.Qg6 Qe8 20.Qxe8 Nxe8 21.g3 e5 22.
fxe5 Rxf1+ 23.Nxf1 Bxe5 24.Bxh6 gxh6 25.Re1 Bxc3 26.bxc3 Kf7 27.Bg6+ Kxg6 
28.Rxe8 Rb8 29.Rf8 Kg7 30.Rd8 Kf7 31.h4 h5 32.a4 Ke7 33.Rh8 Kd6 34.g4 hxg4
35.h5 Ke7 36.h6 Kf7 37.Ng3 Kg6 38.Ne2 Rb1+ 39.Kf2 Bf5 40.Nd4 Be4 41.Nxc6 
Rb2+ 42.Kg3 Kg5 43.Rg8+ 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Hernandez, Gustavo"]
[Black "Oblitas, Carlomagno"]
[Result "1-0"]
[ECO "B38"]
[EventDate "1990.??.??"]
[PlyCount "135"]

1.Nf3 c5 2.c4 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.e4 d6 7.Be2 Bg7 8.Be3 
Ng4 9.Bxg4 Bxg4 10.Nxc6 Bxd1 11.Nxd8 Bg4 12.Nxb7 Rb8 13.h3 Be6 14.Na5 Rxb2
15.Rc1 Bxc3+ 16.Rxc3 Rxa2 17.Nb3 O-O 18.O-O Ra3 19.Rfc1 Bxc4 20.Rxc4 Rxb3 
21.Rc7 Re8 22.Rxa7 f6 23.Rc4 h5 24.Ra5 Kf7 25.g3 Reb8 26.Kg2 R8b7 27.Kf3 
Rb1 28.Rc8 Rb8 29.Rc7 R8b7 30.Rc8 Rb8 31.Rxb8 Rxb8 32.g4 hxg4+ 33.hxg4 g5 
34.Bxg5 fxg5 35.Rxg5 Rb3+ 36.Kg2 e6 37.f3 Rd3 38.Kg3 Kf6 39.Rh5 Kg6 40.Ra5
Rd1 41.Ra3 Kf6 42.Ra6 Rd3 43.Rb6 d5 44.Kf4 dxe4 45.fxe4 Rd4 46.g5+ Kf7 47.
Rb7+ Kg6 48.Re7 Rd6 49.Ke5 Rd8 50.Kxe6 Kxg5 51.e5 Kg6 52.Ra7 Rb8 53.Ke7 
Kg7 54.e6 Kg6 55.Rc7 Ra8 56.Rb7 Kg7 57.Rd7 Ra6 58.Ke8+ Kf6 59.e7 Ke6 60.
Kf8 Kxd7 61.e8=Q+ Kc7 62.Qe5+ Kb7 63.Qd5+ Kc7 64.Ke7 Ra7 65.Qc5+ Kb8+ 66.
Kd8 Rb7 67.Qa5 Ra7 68.Qe5+ 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Paredes, Elias"]
[Black "Minero, Sergio"]
[Result "1-0"]
[ECO "E77"]
[EventDate "1990.??.??"]
[PlyCount "133"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.f4 c5 7.d5 e6 8.Nf3 exd5 9.
e5 dxe5 10.fxe5 Nfd7 11.Bg5 Qa5 12.cxd5 Nxe5 13.O-O Nbd7 14.Be7 Qb4 15.
Bxf8 Nxf8 16.Qb3 Qf4 17.Kh1 Ng4 18.Nd1 Be5 19.Qc4 Qh6 20.h3 Bd6 21.Ng1 Ne3
22.Nxe3 Qxe3 23.Qc3 Qg5 24.Nf3 Qd8 25.Qe3 Bf5 26.Bd3 Bxd3 27.Qxd3 Qf6 28.
Qc3 Qf5 29.Rae1 Nd7 30.Qc4 Nb6 31.Qh4 Qf4 32.Qxf4 Bxf4 33.Ne5 g5 34.Nd3 
Nxd5 35.Nxc5 Ne3 36.Rf3 Nc2 37.Ref1 Nd4 38.Rd3 Nf5 39.Ne4 Ne3 40.Re1 Nc4 
41.g3 Be5 42.b3 Nb2 43.Rd5 Bg7 44.Nxg5 h6 45.Ne4 Rc8 46.Rd2 Rc6 47.Rb1 Re6
48.Nf2 Rg6 49.g4 h5 50.Rdxb2 Bxb2 51.Rxb2 hxg4 52.hxg4 Rc6 53.Rd2 b5 54.
Kg2 a6 55.Ne4 a5 56.Nd6 b4 57.Nf5 Rc3 58.Rf2 Rc7 59.Nh6+ Kh8 60.Rxf7 Rc6 
61.g5 Rc5 62.Nf5 Rc6 63.Kf3 a4 64.Kg4 a3 65.Kh5 Rc8 66.g6 Rd8 67.Ne7 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Peralta, Eduardo"]
[Black "Silva, Sebastian"]
[Result "1-0"]
[ECO "E11"]
[EventDate "1990.??.??"]
[PlyCount "57"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6 5.a3 Bxd2+ 6.Bxd2 Bb7 7.Bg5 d6 8.e3 
Nbd7 9.Qc2 h6 10.Bh4 Qe7 11.Be2 g5 12.Bg3 Ne4 13.O-O-O f5 14.Ne1 h5 15.f3 
h4 16.fxe4 Bxe4 17.Bd3 Bxd3 18.Nxd3 hxg3 19.hxg3 O-O-O 20.Nb4 Kb7 21.Qe2 
g4 22.c5 Nb8 23.c6+ Ka8 24.Kb1 d5 25.Na6 Nxc6 26.Rxh8 Rxh8 27.Rc1 Qd6 28.
Qb5 Kb7 29.Rxc6 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "2"]
[White "Ribas, Alejandro"]
[Black "Zarnicki, Pablo"]
[Result "0-1"]
[ECO "C10"]
[EventDate "1990.??.??"]
[PlyCount "60"]

1.e4 e6 2.d4 d5 3.Nc3 Nc6 4.Nf3 Nf6 5.exd5 exd5 6.Bb5 Bg4 7.h3 Bxf3 8.Qxf3
Be7 9.Bg5 O-O 10.Bxc6 bxc6 11.O-O Rb8 12.b3 Ne4 13.Nxe4 dxe4 14.Bxe7 Qxe7 
15.Rfe1 f5 16.c4 Qd6 17.Qc3 Rbe8 18.Rad1 f4 19.d5 c5 20.f3 e3 21.Re2 Re5 
22.Kh2 Rh5 23.Rb1 Qg6 24.Qe1 a5 25.Rc1 Rff5 26.a3 Rfg5 27.d6 cxd6 28.Qxa5 
Qe6 29.Qa8+ Kf7 30.Qb7+ Kg6 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Oblitas, Carlomagno"]
[Black "Paredes, Elias"]
[Result "1/2-1/2"]
[ECO "C14"]
[EventDate "1990.??.??"]
[PlyCount "114"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Nb5 Nf8 8.c3 
a6 9.Qa4 Nc6 10.Nf3 Rb8 11.Na7 Bd7 12.Nxc6 Bxc6 13.Qb4 Qxb4 14.cxb4 Bb5 
15.Bxb5+ axb5 16.a4 bxa4 17.Rxa4 Nd7 18.Ke2 f6 19.Rc1 c6 20.b5 Ke7 21.Rb4 
cxb5 22.Rxb5 b6 23.Rb3 Rhc8 24.Rbc3 Rxc3 25.Rxc3 Ra8 26.Ra3 Rxa3 27.bxa3 
fxe5 28.dxe5 h6 29.Ke3 g5 30.h3 Kf7 31.Kd4 Nb8 32.Kc3 Nc6 33.Kb3 Kg6 34.g4
b5 35.Kc3 Kf7 36.Nd4 Nxe5 37.Nxb5 Nc6 38.Kd3 Ke7 39.Ke3 e5 40.Kd3 Kd7 41.
f3 Nd8 42.Nc3 Kc6 43.Ne2 Ne6 44.Ng3 Nf4+ 45.Ke3 Kc5 46.Nf5 Kc4 47.Kd2 Nxh3
48.Nxh6 Ng1 49.Ke3 d4+ 50.Ke4 d3 51.Nf5 d2 52.Ne3+ Kc3 53.a4 Ne2 54.a5 
Ng3+ 55.Kxe5 Kd3 56.Nd1 Kc2 57.Ne3+ Kd3 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Playa, Marcelo"]
[Black "Ribas, Alejandro"]
[Result "1-0"]
[ECO "C15"]
[EventDate "1990.??.??"]
[PlyCount "99"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2 dxe4 5.a3 Be7 6.Nxe4 Nd7 7.Bf4 Ngf6 8.Qd3 
Nxe4 9.Qxe4 Nf6 10.Qd3 c5 11.O-O-O cxd4 12.Qxd4 Qxd4 13.Nxd4 Bd7 14.Bb5 
Bxb5 15.Nxb5 O-O 16.Nd6 Nd5 17.Bg3 Bxd6 18.Bxd6 Rfd8 19.Bg3 Rac8 20.Rd2 b5
21.Rhd1 a5 22.Rd4 Rc6 23.R1d2 Rdc8 24.f4 f5 25.Be1 Kf7 26.Re2 a4 27.g3 Kf6
28.Bf2 h6 29.Rd1 g5 30.Bd4+ Kf7 31.Be5 Rc4 32.Rf2 Ne3 33.Rd7+ Ke8 34.Rdd2 
Nd5 35.Kb1 Kf7 36.b3 Re4 37.Rde2 Rxe2 38.Rxe2 gxf4 39.gxf4 Nc3+ 40.Bxc3 
Rxc3 41.Kb2 Rf3 42.Re5 Rxf4 43.Rxb5 Re4 44.bxa4 f4 45.a5 f3 46.Rb3 Rf4 47.
a6 f2 48.a7 f1=Q 49.a8=Q Rc4 50.Rf3+ 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Silva, Sebastian"]
[Black "Hernandez, Gustavo"]
[Result "0-1"]
[ECO "E14"]
[EventDate "1990.??.??"]
[PlyCount "72"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.e3 Bb7 5.Bd3 d5 6.b3 Nbd7 7.O-O Bd6 8.Nc3 O-O 
9.Bb2 c5 10.Qe2 a6 11.Rfd1 Qe7 12.Rac1 Rfd8 13.cxd5 exd5 14.dxc5 bxc5 15.
Ba3 Qe6 16.Bb1 Rac8 17.Ng5 Qe5 18.f4 Qe7 19.Qd2 Re8 20.e4 d4 21.e5 Nxe5 
22.fxe5 Qxe5 23.Nf3 Bxf3 24.gxf3 dxc3 25.Qxd6 Qe3+ 26.Kh1 Qxf3+ 27.Kg1 
Qe3+ 28.Kh1 Ne4 29.Bxe4 Qxe4+ 30.Kg1 Rc6 31.Qg3 Rg6 32.Rxc3 Qe2 33.Rcd3 
Rxg3+ 34.hxg3 h5 35.Bxc5 Qxa2 36.b4 Re2 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "3"]
[White "Zarnicki, Pablo"]
[Black "Peralta, Eduardo"]
[Result "1/2-1/2"]
[ECO "E75"]
[EventDate "1990.??.??"]
[PlyCount "102"]

1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.d4 O-O 6.Bg5 c5 7.d5 e6 8.Qd2 exd5 
9.exd5 Re8+ 10.Be2 Bg4 11.O-O Nbd7 12.Rfe1 Qa5 13.Qf4 Qb4 14.Nb5 Re4 15.
Qc1 Ne8 16.b3 Qa5 17.Bd2 Qd8 18.Bc3 Ndf6 19.Bb2 a6 20.Nc3 Re7 21.h3 Bxf3 
22.Bxf3 Rb8 23.a4 Rxe1+ 24.Qxe1 Nd7 25.Qd2 Qh4 26.Re1 Nef6 27.Ne4 Nxe4 28.
Rxe4 Qd8 29.Bc1 a5 30.Qe1 b6 31.Bd1 Bf8 32.Bd2 Bg7 33.Bf4 Bf8 34.h4 Nf6 
35.Re3 h6 36.h5 g5 37.Bg3 Qd7 38.f4 g4 39.Bh4 Nxh5 40.g3 Bg7 41.Re7 Bd4+ 
42.Kg2 Qf5 43.Qe2 Nf6 44.Bc2 Qc8 45.Qd3 Kf8 46.Re1 Rb7 47.Bxf6 Bxf6 48.Qh7
Bg7 49.Bf5 Qd8 50.Bxg4 Re7 51.Re4 Rxe4 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Hernandez, Gustavo"]
[Black "Zarnicki, Pablo"]
[Result "1-0"]
[ECO "E62"]
[EventDate "1990.??.??"]
[PlyCount "99"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.d4 c6 7.Nc3 Bf5 8.Ne1 Qc8 
9.e4 Bh3 10.Nc2 Bxg2 11.Kxg2 e5 12.f3 Nbd7 13.Be3 Re8 14.Qd2 Qc7 15.Rad1 
Rad8 16.Qf2 b6 17.Rd2 exd4 18.Bxd4 Nc5 19.Rfd1 Qe7 20.b4 Ne6 21.b5 Qb7 22.
Qe3 Rc8 23.Bxf6 Bxf6 24.Nb4 cxb5 25.Ncd5 Bg7 26.cxb5 Nc5 27.Qf4 Be5 28.Qh4
Bg7 29.Nc6 Ra8 30.Nde7+ Kh8 31.Rxd6 a6 32.a4 axb5 33.axb5 Ra2+ 34.Kh1 Ne6 
35.Nxg6+ fxg6 36.Rxe6 Rg8 37.Rd8 Qf7 38.Rxg8+ Kxg8 39.Qd8+ Bf8 40.Rf6 Ra1+
41.Kg2 Qg7 42.Qd5+ Kh8 43.Qe5 Ra2+ 44.Kf1 Bc5 45.Nd8 Rxh2 46.Nf7+ Kg8 47.
Qe8+ Bf8 48.Qe6 Rb2 49.Nh6+ Kh8 50.Rxf8+ 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Minero, Sergio"]
[Black "Oblitas, Carlomagno"]
[Result "0-1"]
[ECO "A32"]
[EventDate "1990.??.??"]
[PlyCount "110"]

1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 a6 6.Bg2 Qc7 7.b3 Bb4+ 8.Bd2 
Bc5 9.Bc3 d5 10.cxd5 Nxd5 11.O-O Nxc3 12.Nxc3 O-O 13.Ne4 Ba3 14.Qd3 e5 15.
Ng5 g6 16.Nc2 Be7 17.Nf3 e4 18.Qxe4 Bf5 19.Qe3 Bxc2 20.Rac1 Ba3 21.Qh6 
Bxc1 22.Rxc1 Qc3 23.Rxc2 Qg7 24.Qxg7+ Kxg7 25.Rc7 Nc6 26.Rxb7 Rab8 27.Rc7 
Rfc8 28.Rxc8 Rxc8 29.e3 a5 30.Bf1 f5 31.Bb5 Kf6 32.Kf1 g5 33.h3 h5 34.Ke2 
Ne5 35.Nd4 Rc1 36.f4 Nf7 37.Bd3 gxf4 38.Nxf5 fxg3 39.Nxg3 Kg5 40.Nf5 Rh1 
41.Kf2 h4 42.a4 Rh2+ 43.Kf1 Rd2 44.Be4 Nd6 45.Nxd6 Rxd6 46.Ke2 Kf6 47.Kf3 
Ke5 48.Bc2 Rd2 49.Bh7 Rd7 50.Bc2 Rg7 51.Ke2 Rg3 52.Kd3 Rxh3 53.Bd1 Rg3 54.
Bh5 h3 55.Be8 Kd6 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Paredes, Elias"]
[Black "Silva, Sebastian"]
[Result "1/2-1/2"]
[ECO "D52"]
[EventDate "1990.??.??"]
[PlyCount "146"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 Nbd7 5.Bg5 c6 6.e3 Qa5 7.Nd2 Bb4 8.Qc2 O-O
9.a3 Ne4 10.Ndxe4 dxe4 11.Bf4 e5 12.dxe5 Bxc3+ 13.Qxc3 Qxc3+ 14.bxc3 Re8 
15.Be2 c5 16.O-O Nxe5 17.Bxe5 Rxe5 18.Rfd1 Re8 19.a4 Be6 20.Rab1 b6 21.a5 
Reb8 22.Ra1 Kf8 23.f3 Rd8 24.axb6 axb6 25.Rxd8+ Rxd8 26.Kf1 exf3 27.gxf3 
Rd2 28.Rb1 Rc2 29.Ke1 Rxc3 30.Kd2 Ra3 31.Rxb6 Ra4 32.Kc3 Ra3+ 33.Rb3 Ra1 
34.Bd3 Rc1+ 35.Kd2 Rh1 36.e4 Rxh2+ 37.Ke3 Ke7 38.Rb5 Kd6 39.f4 Rh3+ 40.Kd2
Rf3 41.f5 Bd7 42.Rb6+ Kc7 43.Ra6 h5 44.Ke2 Rg3 45.Ra7+ Kd8 46.e5 Rxd3 47.
Kxd3 Bxf5+ 48.Ke3 Be6 49.Kf4 Bxc4 50.Ra5 Be6 51.Kg5 c4 52.Rc5 g6 53.Kh4 
Ke7 54.Kg5 Kf8 55.Rc6 Kg7 56.Rc7 h4 57.Kxh4 Kh6 58.Rc6 g5+ 59.Kg3 Kg6 60.
Kf3 Kf5 61.Rc5 g4+ 62.Ke3 Kg5 63.Ra5 Kh4 64.Kf4 Kh3 65.Ra2 Bd5 66.Rc2 Be6 
67.Ra2 Bd7 68.Rc2 Bb5 69.Ra2 Bc6 70.Rc2 Bd5 71.Ra2 Bg2 72.Ra7 Bd5 73.Ra2 
Be6 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "4"]
[White "Peralta, Eduardo"]
[Black "Playa, Marcelo"]
[Result "0-1"]
[ECO "A49"]
[EventDate "1990.??.??"]
[PlyCount "116"]

1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.g3 O-O 5.Bg2 d6 6.d4 Nbd7 7.O-O c6 8.c4 Qc7 
9.Nc3 b6 10.Rc1 Bb7 11.Re1 Rad8 12.e4 e5 13.d5 c5 14.a3 a6 15.Bf1 Ne8 16.
b4 Bc8 17.Na4 Nb8 18.bxc5 bxc5 19.Rb1 f5 20.Nd2 Bh6 21.f3 Nf6 22.Bg2 fxe4 
23.Nxe4 Bf5 24.Nac3 Nbd7 25.Bc1 Bxc1 26.Qxc1 Rb8 27.Rxb8 Rxb8 28.Ng5 Nf8 
29.f4 Kg7 30.fxe5 dxe5 31.h3 h6 32.Nge4 Bxe4 33.Nxe4 Nxe4 34.Rxe4 Rb3 35.
Re3 Qb6 36.Kh2 Rxe3 37.Qxe3 Nd7 38.Qc3 h5 39.Be4 Qf6 40.Kg2 h4 41.Qe3 hxg3
42.Qxg3 Nb6 43.Bd3 Nc8 44.h4 Nd6 45.Qg4 Kh6 46.a4 a5 47.Kh3 Ne8 48.Kg2 Ng7
49.Be4 Nh5 50.Bf3 Nf4+ 51.Kg3 Nd3 52.h5 e4 53.Qxe4 Qd6+ 54.Kg2 Nf4+ 55.Kf1
Qf6 56.hxg6 Kg5 57.Qe3 Kxg6 58.Qxc5 Qa1+ 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Playa, Marcelo"]
[Black "Hernandez, Gustavo"]
[Result "1/2-1/2"]
[ECO "C42"]
[EventDate "1990.??.??"]
[PlyCount "199"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Nc6 7.c4 Bb4+ 8.Bd2 
Nxd2 9.Nbxd2 O-O 10.O-O Bxd2 11.Qxd2 Bg4 12.cxd5 Qxd5 13.Ne1 Nxd4 14.f3 
Be6 15.Rd1 Rad8 16.b3 c5 17.Kh1 Qh5 18.Nc2 b6 19.Qf2 g6 20.Rfe1 Qg5 21.Be4
Nxc2 22.Qxc2 Rxd1 23.Rxd1 Rd8 24.h3 a5 25.Rd3 Qf6 26.Rxd8+ Qxd8 27.Bd3 Qf6
28.Bc4 Bd7 29.a4 Bc6 30.Qe2 h5 31.Bb5 Bd5 32.Bc4 Bc6 33.Bb5 Kg7 34.Bxc6 
Qxc6 35.Qd3 Qf6 36.Kh2 Qf4+ 37.g3 Qd4 38.Qc2 h4 39.gxh4 Qxh4 40.Kg2 Qg5+ 
41.Kh2 Qe5+ 42.Kg2 Qd4 43.Kh2 Kf6 44.Kg2 Ke7 45.Qe2+ Kd7 46.Qb5+ Kc7 47.
Qe2 Qd6 48.Qc4 Qe6 49.Qd3 f5 50.h4 Kc6 51.Qb5+ Kd5 52.Qd3+ Ke5 53.Qc3+ Kd6
54.Qd3+ Ke7 55.Qc3 Qf6 56.Qc4 Kf8 57.Qf4 Kg7 58.Qc7+ Kh6 59.Kg3 Qe6 60.
Qf4+ Kg7 61.Qc7+ Kf6 62.Kf4 Qxb3 63.Qe5+ Kf7 64.Qc7+ Kg8 65.h5 Qe6 66.hxg6
Qxg6 67.Qc8+ Kg7 68.Qxf5 Qc6 69.Ke3 Qxa4 70.Qe5+ Kf7 71.Qc7+ Ke8 72.Qxb6 
Qd4+ 73.Ke2 a4 74.Qc7 Qb2+ 75.Kd3 Qd4+ 76.Ke2 Kf8 77.Qc8+ Ke7 78.Qc7+ Ke6 
79.Qc6+ Kf5 80.Qc8+ Kf6 81.Qc6+ Ke5 82.Qc7+ Qd6 83.Qa5 Qd4 84.Qc7+ Qd6 85.
Qa5 Qc6 86.Qc3+ Kd6 87.Qc4 Kc7 88.Ke3 a3 89.Kd2 Qb6 90.Qf7+ Kc8 91.Qf5+ 
Kb8 92.Qe5+ Ka7 93.Kc2 Ka6 94.Qe2+ Ka5 95.Qd2+ Ka4 96.Qd7+ Ka5 97.Qd2+ Kb5
98.Qd7+ Kb4 99.Qd2+ Ka4 100.Qd7+ 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Ribas, Alejandro"]
[Black "Peralta, Eduardo"]
[Result "1/2-1/2"]
[ECO "A36"]
[EventDate "1990.??.??"]
[PlyCount "64"]

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7 7.O-O O-O 8.Rb1 b6
9.d3 Bb7 10.Be3 a6 11.d4 d6 12.b3 e5 13.dxc5 dxc5 14.Qxd8 Raxd8 15.Na4 Nc8
16.Nec3 Nd4 17.b4 cxb4 18.Rxb4 Nc2 19.Rb3 Nxe3 20.fxe3 Bh6 21.Nd5 b5 22.
cxb5 axb5 23.Nac3 Nd6 24.Nf6+ Kh8 25.Ncd5 Ra8 26.Nd7 Bxd5 27.exd5 Rfe8 28.
Rf6 Ra6 29.Nc5 Kg7 30.Ne4 Rd8 31.h4 Nxe4 32.Rxa6 Nc5 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Silva, Sebastian"]
[Black "Minero, Sergio"]
[Result "0-1"]
[ECO "E99"]
[EventDate "1990.??.??"]
[PlyCount "60"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 
9.Ne1 Nd7 10.Nd3 f5 11.f3 f4 12.Bd2 g5 13.b4 Rf6 14.c5 Rg6 15.Rc1 Nf6 16.
cxd6 cxd6 17.Nf2 h5 18.h3 a6 19.a4 b6 20.Nb1 Kh7 21.Na3 Neg8 22.Qc2 g4 23.
hxg4 hxg4 24.Qc7 Qe8 25.fxg4 Nxg4 26.Bxg4 Bxg4 27.Nxg4 Rxg4 28.Qxd6 Qh5 
29.Rc7 Qh3 30.Rf2 f3 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "5"]
[White "Zarnicki, Pablo"]
[Black "Paredes, Elias"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1990.??.??"]
[PlyCount "148"]

1.g3 Nf6 2.Bg2 e6 3.d3 d5 4.Nd2 Be7 5.Ngf3 b5 6.e4 Bb7 7.e5 Nfd7 8.O-O d4 
9.Re1 Nb6 10.Ne4 h6 11.h4 Nc6 12.c3 Kf8 13.cxd4 Nxd4 14.Be3 Bxe4 15.dxe4 
Nxf3+ 16.Qxf3 c5 17.b3 Qc7 18.Qe2 c4 19.Bd4 Bc5 20.Bb2 Ke7 21.a4 bxa4 22.
bxa4 a5 23.Qg4 Rhg8 24.Kh1 Bb4 25.Rec1 Qc5 26.Rc2 c3 27.Bc1 Nc4 28.Qe2 
Rgd8 29.Bf1 Rac8 30.Bf4 Nxe5 31.Be3 Qc4 32.Bb6 Rd6 33.Qe3 Qb3 34.Rac1 Nc4 
35.Bxc4 Qxc4 36.e5 Rd3 37.Qe2 Qd5+ 38.Kh2 Rb8 39.Bc7 Rc8 40.Bb6 Kf8 41.Be3
Rd8 42.Bf4 Rd1 43.Rxd1 Qxd1 44.Qxd1 Rxd1 45.Rc1 Rd3 46.Kg2 Ke8 47.Kf1 Kd7 
48.Ke2 Rd5 49.Rd1 Kc6 50.Rxd5 Kxd5 51.Kd3 Bc5 52.f3 Bd4 53.g4 Kc5 54.Bg3 
c2 55.Kxc2 Kb4 56.Kd3 Bb2 57.f4 g6 58.h5 gxh5 59.gxh5 Kxa4 60.Kc4 Bc1 61.
Kc3 Kb5 62.Kc2 Be3 63.Kd3 Bc1 64.Kc2 Ba3 65.Bh4 a4 66.Bf6 Bf8 67.Kc3 Kc6 
68.Bh4 Kd5 69.Kd3 a3 70.Be1 a2 71.Bc3 Ba3 72.Kc2 Bb4 73.Bb2 Kc4 74.Ba1 Bc5
0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Hernandez, Gustavo"]
[Black "Ribas, Alejandro"]
[Result "1/2-1/2"]
[ECO "A33"]
[EventDate "1990.??.??"]
[PlyCount "31"]

1.c4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3 Qb6 7.Nb3 Ne5 8.e4 
Bb4 9.Qe2 d6 10.f4 Nc6 11.Be3 Bxc3+ 12.bxc3 Qc7 13.Bg2 Na5 14.Nxa5 Qxa5 
15.Qb2 Bd7 16.O-O 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Minero, Sergio"]
[Black "Zarnicki, Pablo"]
[Result "1-0"]
[ECO "E68"]
[EventDate "1990.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c6 7.e4 Nbd7 8.O-O e5 
9.Re1 Qb6 10.d5 cxd5 11.cxd5 Nc5 12.Qe2 Bd7 13.h3 Ne8 14.Be3 f5 15.Rab1 a5
16.exf5 gxf5 17.Ng5 Qd8 18.Ne6 Nxe6 19.dxe6 Bxe6 20.Bxb7 Rb8 21.Bg2 f4 22.
Ba7 Rc8 23.Nd5 Qd7 24.Nb6 Qxa7 25.Nxc8 Bxc8 26.Qc4+ Kh8 27.Qxc8 fxg3 28.
Rf1 gxf2+ 29.Kh1 Nf6 30.Qe6 e4 31.Rbc1 e3 32.Rc8 Nh5 33.Bd5 Nf6 34.Rxf8+ 
Bxf8 35.Qxf6+ Qg7 36.Qxg7+ Bxg7 37.Bc4 Bxb2 38.Rb1 Bc3 39.Rb7 d5 40.Bd3 
Kg8 41.Bxh7+ 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Oblitas, Carlomagno"]
[Black "Silva, Sebastian"]
[Result "1-0"]
[ECO "B75"]
[EventDate "1990.??.??"]
[PlyCount "69"]

1.e4 c5 2.Nf3 Nc6 3.Nc3 g6 4.d4 cxd4 5.Nxd4 Bg7 6.Be3 Nf6 7.Bc4 d6 8.f3 
Qb6 9.Nf5 Qxb2 10.Nxg7+ Kf8 11.Nd5 Nxd5 12.Qxd5 Qxa1+ 13.Kf2 Qxg7 14.Bh6 
Be6 15.Bxg7+ Kxg7 16.Qb5 Bxc4 17.Qxc4 Rhc8 18.Rd1 Rc7 19.Rd2 Rac8 20.h3 e5
21.Qd5 Rd8 22.Kg3 b6 23.c3 Na5 24.Qb5 Rxc3 25.Rxd6 Rxd6 26.Qxe5+ Kg8 27.
Qxd6 Nc6 28.e5 Rc5 29.f4 Kg7 30.Kh2 h6 31.Qf6+ Kg8 32.e6 fxe6 33.Qxg6+ Kf8
34.Qf6+ Kg8 35.Qxe6+ 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "6"]
[White "Paredes, Elias"]
[Black "Playa, Marcelo"]
[Result "1/2-1/2"]
[ECO "E11"]
[EventDate "1990.??.??"]
[PlyCount "103"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Bxd2+ 5.Qxd2 d5 6.g3 O-O 7.Bg2 Qe7 8.O-O
Rd8 9.Rc1 dxc4 10.Rxc4 c6 11.Qe3 Nbd7 12.Qa3 Qe8 13.Qe3 Ng4 14.Qc1 e5 15.
dxe5 Ndxe5 16.Nxe5 Nxe5 17.Rc3 Ng4 18.Bf1 Qe5 19.f3 Nf6 20.Na3 Nd5 21.Rd3 
Be6 22.Qd2 Qc7 23.Rd1 Re8 24.Kh1 a5 25.Nc2 Nb6 26.b3 c5 27.Qf4 Qxf4 28.
gxf4 a4 29.e4 axb3 30.axb3 Ra2 31.Rc3 Rxc2 32.Rxc2 Bxb3 33.Rdc1 Bxc2 34.
Rxc2 Rc8 35.Rb2 Rc6 36.Kg2 Kf8 37.Kf2 Ke7 38.Ke3 Rh6 39.Rb5 Kd7 40.Rxc5 
Rxh2 41.e5 Rb2 42.f5 Rb1 43.Bh3 f6 44.Kf2 Rb2+ 45.Kg3 Rb4 46.Rc3 Rc4 47.
Rd3+ Ke8 48.Rb3 Nd7 49.Rxb7 Nxe5 50.Rxg7 h5 51.Rh7 h4+ 52.Rxh4 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Peralta, Eduardo"]
[Black "Hernandez, Gustavo"]
[Result "1-0"]
[ECO "C26"]
[EventDate "1990.??.??"]
[PlyCount "49"]

1.e4 e5 2.Nc3 Nf6 3.g3 d5 4.exd5 Nxd5 5.Bg2 Nxc3 6.bxc3 Bd6 7.Nf3 O-O 8.
O-O Bg4 9.h3 Bh5 10.Re1 Nd7 11.d4 Re8 12.g4 Bg6 13.Rb1 exd4 14.cxd4 Be4 
15.Be3 Nb6 16.Nd2 Bxg2 17.Kxg2 Qd7 18.Qf3 Qa4 19.c3 Qxa2 20.Qxb7 Nd5 21.
Rb2 Qa5 22.c4 Nxe3+ 23.Rxe3 Bf4 24.Rxe8+ Rxe8 25.Qe4 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Playa, Marcelo"]
[Black "Minero, Sergio"]
[Result "0-1"]
[ECO "C11"]
[EventDate "1990.??.??"]
[PlyCount "94"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bd3 c5 5.exd5 Nxd5 6.Nf3 Nxc3 7.bxc3 Be7 8.O-O
O-O 9.Qe2 Nd7 10.Rd1 Nf6 11.Bb2 Qc7 12.c4 cxd4 13.Bxd4 Bd7 14.Ng5 h6 15.
Ne4 Nxe4 16.Qxe4 f5 17.Qe3 Bf6 18.Rab1 Bxd4 19.Qxd4 Bc6 20.Qe3 e5 21.c5 e4
22.Bb5 Rad8 23.Bxc6 Qxc6 24.g3 Kh8 25.Rd6 Rxd6 26.cxd6 Qxd6 27.Qxa7 Qd2 
28.Qxb7 Qxc2 29.Qb3 Qc7 30.Qb6 Qf7 31.a4 f4 32.a5 e3 33.Rb2 Qd5 34.Qb4 
Qd1+ 35.Kg2 f3+ 36.Kh3 Qf1+ 37.Kg4 Rc8 38.Rc2 Rg8 39.Kxf3 Qd1+ 40.Re2 Qd5+
41.Kg4 Qg5+ 42.Kf3 Qh5+ 43.g4 Qh3+ 44.Kf4 g5+ 45.Kf5 Qf3+ 46.Ke6 Qxe2 47.
Qd4+ Rg7 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Ribas, Alejandro"]
[Black "Paredes, Elias"]
[Result "1/2-1/2"]
[ECO "C11"]
[EventDate "1990.??.??"]
[PlyCount "41"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 7.Nf3 b6 8.Qd2
Nd7 9.O-O-O Bb7 10.Qf4 Bxe4 11.Qxe4 O-O 12.h4 Be7 13.Ne5 Nf6 14.Qf3 Qd5 
15.Qxd5 exd5 16.f3 Bd6 17.Bb5 c5 18.Nd7 Nxd7 19.Bxd7 Rfd8 20.Bc6 Rac8 21.
Ba4 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "7"]
[White "Zarnicki, Pablo"]
[Black "Oblitas, Carlomagno"]
[Result "0-1"]
[ECO "B53"]
[EventDate "1990.??.??"]
[PlyCount "58"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 Nc6 5.Bb5 Bd7 6.Bxc6 bxc6 7.c4 Bg4 8.Qd3
Nf6 9.Nc3 Qc7 10.Bg5 g6 11.Bxf6 exf6 12.Nd4 Be7 13.O-O O-O 14.b4 Bd7 15.b5
Rfc8 16.bxc6 Bxc6 17.Nd5 Bxd5 18.cxd5 Qc3 19.Qxc3 Rxc3 20.a4 Rc4 21.Nc6 
Bd8 22.f3 Bb6+ 23.Kh1 Re8 24.a5 Bc5 25.Rfc1 Rxc1+ 26.Rxc1 f5 27.Rxc5 dxc5 
28.d6 c4 29.d7 Rf8 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Minero, Sergio"]
[Black "Ribas, Alejandro"]
[Result "1-0"]
[ECO "A32"]
[EventDate "1990.??.??"]
[PlyCount "45"]

1.d4 Nf6 2.c4 e6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 d5 6.Bg2 e5 7.Nc2 d4 8.O-O Nc6 
9.Bg5 Be7 10.Nd2 Bg4 11.Ne1 Qd7 12.Bxf6 Bxf6 13.Nd3 O-O 14.Re1 Rfe8 15.b4 
Rac8 16.b5 Nd8 17.Qa4 b6 18.Ne4 Be7 19.Nxe5 Qe6 20.Nxg4 Rxc4 21.Qb3 Bb4 
22.Ne5 Bxe1 23.Nxc4 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Oblitas, Carlomagno"]
[Black "Playa, Marcelo"]
[Result "0-1"]
[ECO "E32"]
[EventDate "1990.??.??"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.Bg5 h6 6.Bh4 b6 7.e4 Nc6 8.O-O-O 
Bxc3 9.bxc3 e5 10.Nf3 Qe7 11.d5 Na5 12.g4 Ba6 13.g5 hxg5 14.Bxg5 Bxc4 15.
Kb1 b5 16.Rg1 Rfb8 17.Nh4 b4 18.d6 bxc3+ 19.Ka1 Qe6 20.Qxc3 Bxa2 21.Bh3 
Nb3+ 22.Kb2 Nd4+ 23.Ka1 Qxd6 24.Bxf6 Qxf6 25.Nf5 Nxf5 26.Bxf5 Be6 27.Bxe6 
Qxe6 28.Rd5 Rb6 29.Qxc7 Rab8 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Paredes, Elias"]
[Black "Peralta, Eduardo"]
[Result "1/2-1/2"]
[ECO "A48"]
[EventDate "1990.??.??"]
[PlyCount "47"]

1.d4 Nf6 2.Nf3 c5 3.e3 g6 4.Bd3 Bg7 5.O-O O-O 6.c3 d6 7.b4 cxb4 8.cxb4 Bg4
9.Bb2 Qb6 10.b5 a6 11.a4 axb5 12.axb5 Rxa1 13.Bxa1 Nbd7 14.Nbd2 d5 15.Qb3 
Rc8 16.Bc3 e6 17.h3 Bf5 18.Be2 Qc7 19.Rc1 h5 20.Bb2 Qb8 21.Rxc8+ Qxc8 22.
Qc3 Qxc3 23.Bxc3 Ne4 24.Nxe4 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "8"]
[White "Silva, Sebastian"]
[Black "Zarnicki, Pablo"]
[Result "1/2-1/2"]
[ECO "E91"]
[EventDate "1990.??.??"]
[PlyCount "71"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.Be2 c5 7.O-O Nc6 8.dxc5 
dxc5 9.Be3 Qa5 10.Nd2 Rd8 11.Nd5 Nxd5 12.cxd5 Nd4 13.Nb3 Qb4 14.Bd2 Qa4 
15.Nxc5 Nxe2+ 16.Qxe2 Qc2 17.Nd3 Bxb2 18.Nxb2 Qxb2 19.Qe3 Qb6 20.Qh6 Bd7 
21.Bc3 f6 22.e5 Rdc8 23.Rac1 Qd8 24.Qf4 Bb5 25.Rfd1 Rc4 26.Qe3 Rac8 27.
exf6 exf6 28.d6 Qd7 29.Qf3 Ba4 30.Qd5+ Qf7 31.d7 Bxd7 32.Qxf7+ Kxf7 33.
Rxd7+ Kg8 34.Rxb7 Rxc3 35.Rxc3 Rxc3 36.g3 1/2-1/2

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Hernandez, Gustavo"]
[Black "Paredes, Elias"]
[Result "1-0"]
[ECO "C00"]
[EventDate "1990.??.??"]
[PlyCount "97"]

1.e4 e6 2.d3 b5 3.g3 Bb7 4.Bg2 d5 5.Nd2 Bd6 6.Ngf3 c5 7.O-O Ne7 8.c3 Bc7 
9.exd5 exd5 10.Re1 O-O 11.a4 bxa4 12.Qxa4 Nd7 13.Nf1 Nb6 14.Qc2 Bc8 15.Be3
Bd6 16.Qc1 Nc6 17.d4 c4 18.Ne5 Bb7 19.Bf4 Ne7 20.h4 Qc7 21.Kh2 a6 22.Nf3 
Bxf4 23.Qxf4 Qxf4 24.gxf4 Rfe8 25.N3d2 Nf5 26.h5 Kf8 27.Re5 Nd6 28.Ne3 f6 
29.Rxe8+ Rxe8 30.Ra5 Ne4 31.Bxe4 dxe4 32.Ndxc4 Nc8 33.Rc5 Rd8 34.Rc7 Ba8 
35.f5 Ne7 36.Na5 Bd5 37.Ra7 Bf7 38.Rxa6 Bxh5 39.Kg3 Be2 40.Ra7 Bb5 41.c4 
Be8 42.d5 g5 43.b4 h5 44.b5 Rb8 45.Nc6 Bxc6 46.dxc6 Rc8 47.c7 Ke8 48.b6 
Nc6 49.b7 1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Peralta, Eduardo"]
[Black "Minero, Sergio"]
[Result "0-1"]
[ECO "C06"]
[EventDate "1990.??.??"]
[PlyCount "54"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.O-O Bd6 11.Nf3 Qc7 12.Bg5 O-O 13.Bh4 Bd7 14.Bg3 Nh5 15.Nc3 
Nxg3 16.hxg3 Nb4 17.Bb1 Qd8 18.Ne5 Bxe5 19.dxe5 Qg5 20.a3 Nc6 21.Qd3 g6 
22.f4 Qe7 23.b4 a5 24.b5 Qc5+ 25.Kh2 Nxe5 26.Qd2 Ng4+ 27.Kh1 d4 0-1

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Playa, Marcelo"]
[Black "Silva, Sebastian"]
[Result "1-0"]
[ECO "B34"]
[EventDate "1990.??.??"]
[PlyCount "91"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Nde2 Nf6 7.g3 O-O 8.Bg2 
d6 9.O-O Bd7 10.Nd5 Nxd5 11.exd5 Ne5 12.h3 Rc8 13.c3 Bb5 14.f4 Nd3 15.Rf3 
Nxc1 16.Nxc1 Bd7 17.Kh2 b5 18.Nd3 Bf5 19.Qe2 a5 20.a3 Qb6 21.Re1 Rc7 22.
Re3 Bf6 23.g4 Bxd3 24.Rxd3 b4 25.cxb4 axb4 26.Rb3 Rfc8 27.Rxb4 Qa5 28.Be4 
g5 29.fxg5 Be5+ 30.Kg2 Rc1 31.Rxc1 Rxc1 32.Qf2 Qa6 33.Bxh7+ Kxh7 34.Qxf7+ 
Kh8 35.Qf8+ Kh7 36.Qxe7+ Kh8 37.Qf8+ Kh7 38.g6+ Kxg6 39.Qg8+ Kf6 40.g5+ 
Ke7 41.Qh7+ Kf8 42.Rb8+ Rc8 43.Qf5+ Kg7 44.Rxc8 Qe2+ 45.Qf2 Qe4+ 46.Qf3 
1-0

[Event "15th Pan-American U20 qual. group 2"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "9"]
[White "Ribas, Alejandro"]
[Black "Oblitas, Carlomagno"]
[Result "0-1"]
[ECO "B02"]
[EventDate "1990.??.??"]
[PlyCount "88"]

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 Nxc3 7.dxc3 Nc6 8.Bf4 
Bxc5 9.Qg4 g6 10.h4 h5 11.Qg3 Ne7 12.O-O-O Nf5 13.Qh3 d5 14.Bg5 Be7 15.Nf3
Bd7 16.Bd3 c5 17.g4 hxg4 18.Qxg4 Qa5 19.Kb1 O-O-O 20.Bxf5 exf5 21.Qf4 Bxg5
22.Nxg5 Be6 23.Nxe6 fxe6 24.Qg5 Rhg8 25.Rhg1 Qa4 26.Qf6 Rge8 27.Rde1 Rh8 
28.Qxg6 Qxh4 29.f3 Qh7 30.Qg2 Qh2 31.Qg6 Qh7 32.Qg2 Rhg8 33.Qf2 b6 34.a3 
f4+ 35.Ka2 Qd3 36.Rxg8 Rxg8 37.Rg1 Rd8 38.Rg7 d4 39.cxd4 Rxd4 40.Rg8+ Kb7 
41.Rg7+ Ka6 42.Rg1 c4 43.Rc1 Qb3+ 44.Kb1 Rd1 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Giaccio, Alfredo"]
[Black "Oblitas, Carlomagno"]
[Result "1-0"]
[ECO "E62"]
[EventDate "1990.??.??"]
[PlyCount "113"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 O-O 5.g3 d6 6.Bg2 Nc6 7.d5 Na5 8.Nd2 c5 
9.Qc2 Bd7 10.O-O a6 11.b3 b5 12.Bb2 bxc4 13.bxc4 Rb8 14.h3 Qc7 15.e4 Rb4 
16.a3 Rb6 17.Rfe1 Rfb8 18.Rab1 Qc8 19.Kh2 Nb3 20.Nxb3 Rxb3 21.f4 h5 22.Ba1
Rxb1 23.Rxb1 h4 24.gxh4 Nh5 25.Ne2 Rxb1 26.Qxb1 Bxa1 27.Qxa1 Qb7 28.Qc3 
Qb1 29.Qf3 Qc2 30.Ng3 Qxc4 31.Nxh5 gxh5 32.Qxh5 Qd4 33.Qg5+ Kf8 34.e5 dxe5
35.fxe5 Bb5 36.h5 f6 37.Qh6+ Ke8 38.Qg6+ Kd8 39.exf6 exf6 40.Qg8+ Kd7 41.
Qe6+ Kd8 42.Qd6+ Ke8 43.h6 Bd3 44.Qe6+ Kd8 45.d6 Qe5+ 46.Qxe5 fxe5 47.Bd5 
Bh7 48.Be6 c4 49.Bxc4 Kd7 50.Bxa6 Kxd6 51.a4 Ke7 52.Bb7 Kf6 53.Kg3 Bd3 54.
Kf3 Bf1 55.Be4 Bxh3 56.h7 Kg7 57.Ke3 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Hernandez, Gustavo"]
[Black "Amura, Claudia"]
[Result "1/2-1/2"]
[ECO "D97"]
[EventDate "1990.??.??"]
[PlyCount "130"]

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.Nc3 d5 5.Qb3 dxc4 6.Qxc4 O-O 7.Bf4 Na6 8.e4 
c5 9.dxc5 Qa5 10.e5 Nd7 11.a3 Qxc5 12.Nd5 Nb6 13.Qxc5 Nxc5 14.Nxe7+ Kh8 
15.Nxc8 Raxc8 16.Be2 Nca4 17.b3 Nc3 18.Rc1 Nbd5 19.Bd2 Ne4 20.Rxc8 Rxc8 
21.Bc4 Nxd2 22.Kxd2 Bh6+ 23.Kd3 Nf4+ 24.Kd4 Kg7 25.g3 Nh3 26.Rf1 Rd8+ 27.
Kc3 Kf8 28.Nd4 Ng5 29.f3 Bg7 30.f4 Ne4+ 31.Kd3 Nd6 32.Bd5 Nf5 33.Ke4 Rxd5 
34.Nxf5 Ra5 35.Nd4 Rxa3 36.Rc1 b6 37.Rc7 Ke8 38.g4 Ra1 39.Kd5 Ra5+ 40.Ke4 
Ra1 41.Rc8+ Ke7 42.Rc7+ Ke8 43.Rc8+ Ke7 44.Rg8 Bf8 45.Rh8 h6 46.Rh7 Ke8 
47.e6 fxe6 48.Nxe6 Be7 49.Rxh6 Re1+ 50.Kd5 Rd1+ 51.Ke5 Re1+ 52.Kd5 Rd1+ 
53.Kc4 Kf7 54.Nd4 Bf6 55.Nc6 Kg7 56.g5 Bb2 57.Rh4 a6 58.b4 Rd6 59.Ne5 Rd4+
60.Kb3 Bc1 61.Nxg6 a5 62.bxa5 bxa5 63.Kc3 Rb4 64.Kc2 Rc4+ 65.Kb3 Rb4+ 
1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Paredes, Elias"]
[Black "Rodriguez, Pedro Cesar"]
[Result "0-1"]
[ECO "D20"]
[EventDate "1990.??.??"]
[PlyCount "108"]

1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 e6 5.Nc3 exd5 6.Nxd5 Nf6 7.Bxc4 Nxd5 8.Bxd5
Qb6 9.Nf3 Be6 10.O-O Be7 11.Qc2 O-O 12.Be3 Na6 13.Rfd1 Rfd8 14.a3 Nc7 15.
Qc4 Qd6 16.b4 cxb4 17.axb4 Nxd5 18.exd5 Bxd5 19.Qb5 Qc6 20.Qxc6 bxc6 21.
Ne5 Bxb4 22.Rdc1 a5 23.Nxc6 Bxc6 24.Rxc6 a4 25.Kf1 a3 26.Bc5 Bxc5 27.Rxc5 
Rdb8 28.Ra2 Rb3 29.Ke2 Kf8 30.Kd2 Ke7 31.Rc3 Rxc3 32.Kxc3 Ke6 33.Kb3 Kf5 
34.Kc3 Ra7 35.Kd3 Ke5 36.Kc4 Kf5 37.Kd3 h6 38.Kc4 Ke5 39.Kb3 Kf4 40.Kc2 
Ke4 41.Kc3 Ra6 42.Kc4 g5 43.Kc3 g4 44.Kc4 h5 45.Re2+ Kf4 46.Ra2 f5 47.Kd4 
Ra4+ 48.Kd3 h4 49.Ke2 Ke4 50.f3+ gxf3+ 51.gxf3+ Kf4 52.Kf2 h3 53.Ke2 Ra7 
54.Kf2 Ra8 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Rodrigues, Adriano"]
[Black "Playa, Marcelo"]
[Result "1/2-1/2"]
[ECO "C02"]
[EventDate "1990.??.??"]
[PlyCount "69"]

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7 6.Be2 Bb5 7.dxc5 Bxc5 8.O-O 
Bxe2 9.Qxe2 Qc7 10.Be3 Bxe3 11.Qxe3 Nc6 12.Na3 a6 13.Nc2 Nge7 14.Rae1 O-O 
15.Nfd4 Nxd4 16.Nxd4 Nc6 17.f4 Nxd4 18.Qxd4 Rac8 19.Rd1 Qc4 20.Qxc4 Rxc4 
21.g3 h6 22.h4 g6 23.Kg2 Rfc8 24.Rf2 Kg7 25.Kf3 b5 26.Rd4 a5 27.Rfd2 b4 
28.cxb4 axb4 29.Ke3 Ra8 30.Rxc4 dxc4 31.Kd4 Rd8+ 32.Ke3 Ra8 33.Kd4 Rd8+ 
34.Ke3 Ra8 35.Kd4 1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Rodriguez, Andres"]
[Black "Minero, Sergio"]
[Result "1-0"]
[ECO "C06"]
[EventDate "1990.??.??"]
[PlyCount "65"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.c3 c5 6.Bd3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.Nf3 Bd6 11.O-O Qc7 12.g3 O-O 13.Bf4 Bxf4 14.Nxf4 Qb6 15.Rb1
Nb4 16.Re1 Nxd3 17.Qxd3 Bd7 18.b3 Rae8 19.Rbc1 Ne4 20.Qe3 Qd8 21.Ne5 Rf6 
22.Rc2 Ref8 23.Rec1 Nd6 24.Nh5 Nf5 25.Qd2 Rh6 26.Nxg7 Kxg7 27.Nxd7 Rg8 28.
Qf4 Kh8 29.Qe5+ Ng7 30.Rc7 Rh5 31.Qf6 Qe8 32.Ne5 h6 33.g4 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Amura, Claudia"]
[Black "Playa, Marcelo"]
[Result "1-0"]
[ECO "E32"]
[EventDate "1990.??.??"]
[PlyCount "53"]

1.d4 e6 2.c4 Nf6 3.Nc3 Bb4 4.Qc2 O-O 5.Bg5 d6 6.e3 Nbd7 7.Bd3 h6 8.Bh4 e5 
9.Ne2 Re8 10.O-O Bxc3 11.Nxc3 b6 12.f3 Bb7 13.b4 a5 14.b5 Qe7 15.Bh7+ Kh8 
16.Bf5 Nf8 17.Rae1 g6 18.f4 N8h7 19.fxe5 dxe5 20.Be4 Bxe4 21.Nxe4 g5 22.
Nxf6 Nxf6 23.Bg3 Nd7 24.dxe5 Qe6 25.Rf5 Re7 26.Ref1 Rae8 27.Rf6 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Minero, Sergio"]
[Black "Giaccio, Alfredo"]
[Result "1-0"]
[ECO "E01"]
[EventDate "1990.??.??"]
[PlyCount "81"]

1.d4 e6 2.c4 Nf6 3.g3 d5 4.Bg2 Bb4+ 5.Bd2 a5 6.Nf3 c6 7.O-O O-O 8.Nc3 b6 
9.Qc2 Ba6 10.cxd5 cxd5 11.Rfe1 Ra7 12.a3 Be7 13.Rac1 b5 14.Bf4 Nbd7 15.Ne5
Qb6 16.e4 dxe4 17.Nxe4 Rc8 18.Nxf6+ Bxf6 19.Qxc8+ Bxc8 20.Rxc8+ Nf8 21.Nc6
Rd7 22.Rc1 g5 23.Be3 Kg7 24.d5 Qb7 25.Nxa5 Qa6 26.b4 Qd6 27.Bc5 Qe5 28.
Bxf8+ Kg6 29.d6 Qb2 30.Rf1 Qxa3 31.Bc6 Rd8 32.d7 Qc3 33.Nb7 Qc4 34.Nxd8 
Bxd8 35.Bc5 Bf6 36.d8=Q Bxd8 37.Rxd8 h5 38.Rd4 Qa2 39.Bxb5 e5 40.Rd6+ Kg7 
41.Bc6 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Paredes, Elias"]
[Black "Rodriguez, Andres"]
[Result "1/2-1/2"]
[ECO "A40"]
[EventDate "1990.??.??"]
[PlyCount "62"]

1.d4 e6 2.c4 Bb4+ 3.Bd2 a5 4.g3 Nf6 5.Bg2 Nc6 6.Nf3 O-O 7.O-O Bxd2 8.Nbxd2
d6 9.e4 e5 10.d5 Nb8 11.Ne1 Na6 12.a3 Bg4 13.f3 Bd7 14.Qe2 c6 15.Qe3 Nc5 
16.b3 cxd5 17.cxd5 Bb5 18.Rf2 Nfd7 19.g4 Qb6 20.Bf1 Bxf1 21.Rxf1 Rfc8 22.
Ng2 Qa6 23.Rac1 Nd3 24.Rc4 Qb6 25.Rb1 Nf4 26.Qxb6 Nxb6 27.Rxc8+ Rxc8 28.
Nxf4 exf4 29.Nc4 Nxc4 30.bxc4 Rxc4 31.Rxb7 Kf8 1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Rodrigues, Adriano"]
[Black "Oblitas, Carlomagno"]
[Result "1/2-1/2"]
[ECO "B02"]
[EventDate "1990.??.??"]
[PlyCount "99"]

1.e4 Nf6 2.e5 Nd5 3.Nc3 Nxc3 4.dxc3 d6 5.Bc4 Nc6 6.Nf3 Bf5 7.Qe2 e6 8.Bf4 
Qd7 9.O-O-O Bg4 10.h3 Bxf3 11.Qxf3 O-O-O 12.Bb5 a6 13.Ba4 h6 14.c4 Qe8 15.
exd6 Bxd6 16.Bxd6 Rxd6 17.Rxd6 cxd6 18.Bxc6 bxc6 19.Qg3 Qe7 20.Qxg7 Qg5+ 
21.Qxg5 hxg5 22.Kd2 Kd7 23.b4 f5 24.g3 e5 25.h4 Ke6 26.a4 e4 27.h5 d5 28.
b5 axb5 29.cxb5 cxb5 30.axb5 Kd6 31.Ke3 Kc5 32.c3 Rf8 33.h6 f4+ 34.Kd2 
Kxb5 35.h7 Rh8 36.Rh6 Kc5 37.Ke2 d4 38.cxd4+ Kxd4 39.Rh5 fxg3 40.fxg3 Ke5 
41.Rxg5+ Kf6 42.Rh5 Kg6 43.Rh4 Rxh7 44.Rxe4 Rf7 45.Ke3 Kg5 46.Rf4 Rxf4 47.
gxf4+ Kf5 48.Kf3 Kf6 49.Kg4 Kg6 50.f5+ 1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Rodriguez, Pedro Cesar"]
[Black "Hernandez, Gustavo"]
[Result "1/2-1/2"]
[ECO "D24"]
[EventDate "1990.??.??"]
[PlyCount "59"]

1.Nf3 d5 2.d4 Nf6 3.c4 dxc4 4.Nc3 a6 5.a4 e6 6.e4 Bb4 7.e5 Nd5 8.Bd2 Nxc3 
9.bxc3 Be7 10.Bxc4 b6 11.O-O Bb7 12.Ne1 c5 13.Qg4 g6 14.Nf3 cxd4 15.cxd4 
Bd5 16.Bd3 h6 17.Be3 Nc6 18.Nd2 Nb4 19.Be4 Qd7 20.Rfc1 Kf8 21.Nc4 Rb8 22.
Bxd5 Nxd5 23.Qe2 Kg7 24.Nd2 Qb7 25.Nb3 Rbc8 26.a5 b5 27.Nc5 Bxc5 28.dxc5 
Rhd8 29.Qf3 Qc7 30.Qe4 1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Amura, Claudia"]
[Black "Paredes, Elias"]
[Result "1-0"]
[ECO "E73"]
[EventDate "1990.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 c5 6.dxc5 Qa5 7.Bd2 Qxc5 8.Nf3 
Bg4 9.O-O O-O 10.Be3 Qc8 11.Rc1 Nc6 12.Nd2 Bxe2 13.Qxe2 Ng4 14.Bg5 h6 15.
Bh4 Nd4 16.Qd1 g5 17.Bg3 f5 18.Nd5 Nc6 19.exf5 Qxf5 20.Qb3 Qd7 21.Nf3 Nge5
22.Nxe5 dxe5 23.Rcd1 Qc8 24.Qe3 Qg4 25.b3 Rad8 26.f3 Qf5 27.Qc5 Qf7 28.h3 
e4 29.Kh2 exf3 30.Rxf3 Qe8 31.Rfd3 Qf7 32.Nxe7+ Kh8 33.Nxc6 Rxd3 34.Rxd3 
bxc6 35.Rf3 Qe8 36.Rxf8+ Bxf8 37.Qxa7 h5 38.Qb8 Qe7 39.Qe5+ Kg8 40.Qxe7 
Bxe7 41.Bc7 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Hernandez, Gustavo"]
[Black "Rodrigues, Adriano"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1990.??.??"]
[PlyCount "83"]

1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 c6 5.Bg5 Nbd7 6.cxd5 exd5 7.Qc2 Be7 8.e3 
O-O 9.Bd3 Re8 10.O-O Nf8 11.Bxf6 Bxf6 12.b4 g6 13.Rab1 Ne6 14.Rfc1 h5 15.
Nd2 g5 16.Ne2 g4 17.b5 Bd7 18.bxc6 Bxc6 19.Bb5 Rc8 20.Bxc6 Rxc6 21.Qf5 Ng7
22.Qd3 Rxc1+ 23.Rxc1 Bg5 24.Rc5 b6 25.Rb5 a6 26.Rb1 b5 27.Ng3 Qd7 28.Nb3 
h4 29.Nc5 Qc8 30.Nf1 h3 31.Ng3 Bh4 32.Re1 Bxg3 33.hxg3 hxg2 34.Kxg2 Qc6 
35.Rh1 f5 36.Qa3 Ra8 37.Nd3 Ne6 38.Qe7 Ng7 39.Ne5 Qe6 40.Qh4 Kf8 41.Qg5 
Kg8 42.Rh6 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Minero, Sergio"]
[Black "Rodriguez, Pedro Cesar"]
[Result "1/2-1/2"]
[ECO "E04"]
[EventDate "1990.??.??"]
[PlyCount "95"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.g3 c5 5.Qa4+ Nc6 6.Bg2 Bd7 7.Qxc4 e6 8.O-O 
cxd4 9.Nxd4 Rc8 10.Nc3 Be7 11.Rd1 O-O 12.Nxc6 bxc6 13.Be3 c5 14.Rac1 Qb6 
15.Na4 Bxa4 16.Qxa4 Rfd8 17.Rxd8+ Rxd8 18.b4 Qxb4 19.Qxa7 Rd7 20.Qa8+ Rd8 
21.Qb7 Qxb7 22.Bxb7 Rd7 23.Ba6 Rc7 24.a4 Kf8 25.Bb5 Nd5 26.Bd2 Rb7 27.e4 
Nc7 28.Bf1 Ra7 29.Bf4 g5 30.Bxc7 Rxc7 31.a5 c4 32.Bxc4 Bc5 33.Kf1 Ba7 34.
Ke2 Ke7 35.f3 h6 36.a6 Kf6 37.Kd3 Ke5 38.Kc3 Bd4+ 39.Kb3 Ba7 40.Rd1 Re7 
41.Rd8 Rc7 42.Kb4 Bc5+ 43.Kb5 Ba7 44.Ra8 Bg1 45.h3 Bf2 46.Rd8 Rc5+ 47.Kb4 
Rc7 48.Rh8 1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Oblitas, Carlomagno"]
[Black "Rodriguez, Andres"]
[Result "1/2-1/2"]
[ECO "E32"]
[EventDate "1990.??.??"]
[PlyCount "104"]

1.d4 e6 2.c4 Nf6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 h6 8.Bh4 
Bb7 9.f3 d5 10.cxd5 exd5 11.e3 Nbd7 12.Bb5 c6 13.Bd3 Re8 14.Bf2 c5 15.Ne2 
Rc8 16.Qd2 Nb8 17.O-O Nc6 18.dxc5 bxc5 19.b4 c4 20.Bf5 Rc7 21.Nd4 Nxd4 22.
Qxd4 Ba6 23.a4 Rce7 24.Bc2 Bc8 25.Rfb1 Rb7 26.Bh4 g5 27.Be1 Qb6 28.Qxb6 
Rxb6 29.Bf2 Rb7 30.b5 Bd7 31.Rb2 a6 32.Rab1 axb5 33.axb5 Ra8 34.b6 Bc6 35.
Bf5 Nh5 36.e4 dxe4 37.Bxe4 Bxe4 38.fxe4 Nf6 39.e5 Nd7 40.Bd4 Re8 41.Rb5 
Kf8 42.Rc1 Rc8 43.Rc3 Rbb8 44.Rb4 h5 45.Kf2 Rc6 46.Rc1 c3 47.Rxc3 Rxc3 48.
Bxc3 Rxb6 49.Rxb6 Nxb6 50.Kf3 Ke7 51.Bd2 g4+ 52.Kf4 Ke6 1/2-1/2

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Playa, Marcelo"]
[Black "Giaccio, Alfredo"]
[Result "1-0"]
[ECO "C12"]
[EventDate "1990.??.??"]
[PlyCount "53"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6 hxg5 7.fxg7 Rg8 8.h4 
gxh4 9.Nf3 Be7 10.Qd2 Rxg7 11.Qh6 Bf6 12.Qh8+ Ke7 13.Qh6 Bd7 14.Nxh4 Bc6 
15.Qe3 Rg4 16.Nf3 Nd7 17.Rh5 Nb6 18.g3 Qd6 19.Be2 Qb4 20.O-O-O Na4 21.Nxa4
Re4 22.Qc3 Qxa4 23.Qc5+ Kd7 24.Rh7 Ke8 25.Bd3 Rg4 26.Kb1 Be7 27.Rh8+ 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "13"]
[White "Giaccio, Alfredo"]
[Black "Paredes, Elias"]
[Result "0-1"]
[ECO "A35"]
[EventDate "1990.??.??"]
[PlyCount "78"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 Nc6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nc7 7.O-O e6 8.d3 
Be7 9.Be3 O-O 10.Rc1 e5 11.a3 b6 12.Nd2 Bb7 13.Qa4 Na5 14.Bxb7 Nxb7 15.Qe4
Nd6 16.Qxe5 Bf6 17.Qh5 g6 18.Qf3 Nf5 19.Nde4 Bg7 20.Rfe1 Ne6 21.b4 cxb4 
22.axb4 a5 23.bxa5 Nxe3 24.Qxe3 Rxa5 25.Qf3 Nd4 26.Qg2 Ne6 27.Red1 f5 28.
Nd2 Rc5 29.Na4 Ra5 30.Nxb6 Nd4 31.Kf1 Nxe2 32.Kxe2 Qxb6 33.Kf1 Qb5 34.Nc4 
Ra2 35.Rb1 Qc5 36.Qf3 Qd4 37.Qe3 f4 38.Qe6+ Kh8 39.Nd2 fxg3 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "13"]
[White "Oblitas, Carlomagno"]
[Black "Amura, Claudia"]
[Result "1-0"]
[ECO "D65"]
[EventDate "1990.??.??"]
[PlyCount "159"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 c6 8.Qc2 a6 
9.cxd5 exd5 10.Bd3 g6 11.O-O Ne8 12.Bf4 Bd6 13.Bh6 Ng7 14.e4 dxe4 15.Nxe4 
Be7 16.Rfe1 Nb6 17.Nc5 Nd5 18.Qb3 b6 19.Na4 Bb4 20.Red1 b5 21.Nc5 Bg4 22.
Be4 a5 23.h3 a4 24.Qd3 Bc8 25.Ne5 Qd6 26.Nxc6 Qxc6 27.Qf3 Rd8 28.Nd3 Qd6 
29.Nxb4 Bb7 30.Nxd5 Bxd5 31.Bxd5 Qxd5 32.Qxd5 Rxd5 33.Rc5 Rxc5 34.dxc5 Ne6
35.Be3 Kf8 36.Rd7 Rb8 37.Kf1 h5 38.Ke2 Ke8 39.Ra7 Nd8 40.Rc7 Rb7 41.Rc8 
Kd7 42.Ra8 Nc6 43.Ra6 Kc7 44.a3 Kd7 45.f3 Rb8 46.Kf2 Rb7 47.g4 hxg4 48.
fxg4 Ne5 49.Kg3 Kc8 50.Bf4 Re7 51.Rb6 Nd3 52.Rxb5 Re2 53.Kf3 Rc2 54.Bd6 
Nxb2 55.Ke4 Nc4 56.Kd5 Nxd6 57.cxd6 Rd2+ 58.Kc6 Rd3 59.Ra5 Rc3+ 60.Kd5 
Rxa3 61.Ra8+ Kd7 62.Ra7+ Kd8 63.Rxf7 Rxh3 64.Ra7 a3 65.Ke6 Re3+ 66.Kf7 Rd3
67.g5 Kc8 68.Ke6 Re3+ 69.Kf6 Rd3 70.d7+ Kd8 71.Kxg6 Ke7 72.Kg7 Rg3 73.g6 
Rh3 74.Kg8 Rg3 75.g7 Rh3 76.d8=Q+ Kxd8 77.Kf8 Rf3+ 78.Rf7 a2 79.g8=Q a1=Q 
80.Qg5+ 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "13"]
[White "Playa, Marcelo"]
[Black "Rodriguez, Pedro Cesar"]
[Result "1-0"]
[ECO "B12"]
[EventDate "1990.??.??"]
[PlyCount "117"]

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Ne2 e6 5.Nf4 h6 6.Bd3 Bxd3 7.Nxd3 c5 8.dxc5 
Bxc5 9.O-O Bb6 10.Qg4 g6 11.c4 Nc6 12.Nc3 h5 13.Qf4 g5 14.Qg3 h4 15.Qg4 
Nh6 16.Qh5 dxc4 17.Ne1 Qd4 18.Nf3 Qg4 19.Qxg4 Nxg4 20.Bxg5 Ngxe5 21.Nxh4 
Rh5 22.Ne4 Bd8 23.Bxd8 Kxd8 24.g3 Ke7 25.f4 Nd3 26.b3 cxb3 27.axb3 Rb5 28.
f5 Rxb3 29.fxe6 Kxe6 30.Rad1 Nce5 31.Nf3 Rb4 32.Neg5+ Ke7 33.Nxf7 Nxf7 34.
Rxd3 a5 35.Nd4 Nd8 36.Re1+ Kf7 37.Rf3+ Kg6 38.Nf5 Nc6 39.Re6+ Kg5 40.Nh4 
Kg4 41.Rg6+ Kh3 42.Rf1 Ne5 43.Rg5 Re8 44.Ng2 Nd3 45.g4 Ne1 46.Rxe1 Rxe1+ 
47.Nxe1 a4 48.Ng2 Rb1+ 49.Kf2 a3 50.Ra5 Rb2+ 51.Kf3 Kxh2 52.Ne3 a2 53.g5 
Kh1 54.g6 Rb6 55.Rxa2 Rxg6 56.Ng4 Ra6 57.Rh2+ Kg1 58.Rg2+ Kf1 59.Ne3+ 1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "13"]
[White "Rodrigues, Adriano"]
[Black "Minero, Sergio"]
[Result "0-1"]
[ECO "C05"]
[EventDate "1990.??.??"]
[PlyCount "58"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 Bc5 5.e5 Nfd7 6.d4 Be7 7.Bd3 c5 8.c3 Nc6 
9.O-O Qb6 10.dxc5 Bxc5 11.Qe2 f6 12.exf6 Nxf6 13.Nb3 Bd6 14.c4 O-O 15.Bg5 
Bd7 16.Rac1 Qc7 17.Nbd4 Bxh2+ 18.Kh1 Nxd4 19.Nxd4 Qe5 20.Qd2 Nh5 21.cxd5 
Bf4 22.Bxf4 Rxf4 23.Nf3 Rxf3 24.Bxh7+ Kxh7 25.Rfe1 Qf4 26.Qc2+ Kh8 27.gxf3
Qh4+ 28.Kg1 Qg5+ 29.Kh2 Nf4 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "13"]
[White "Rodriguez, Andres"]
[Black "Hernandez, Gustavo"]
[Result "0-1"]
[ECO "C26"]
[EventDate "1990.??.??"]
[PlyCount "78"]

1.e4 e5 2.Nc3 Nf6 3.g3 d5 4.exd5 Nxd5 5.Bg2 Nxc3 6.bxc3 Bd6 7.Rb1 c6 8.Nf3
Qc7 9.O-O Be6 10.a4 O-O 11.d4 Nd7 12.Qd3 h6 13.Nh4 f5 14.Bh3 e4 15.Qe2 Nb6
16.a5 Nd5 17.Bd2 Qf7 18.Rfe1 b5 19.axb6 axb6 20.c4 Ne7 21.d5 cxd5 22.Rxb6 
Bc5 23.Rb5 Rac8 24.Ra1 d4 25.Bf1 Bd6 26.c5 Bxc5 27.Raa5 Bd6 28.Qd1 Nc6 29.
Ra6 Be7 30.Ng2 Bc4 31.Bxc4 Qxc4 32.Rab6 Bc5 33.Rb7 Ne5 34.Nh4 e3 35.Be1 d3
36.Qh5 exf2+ 37.Bxf2 Bxf2+ 38.Kg2 Qe4+ 39.Nf3 Qxf3+ 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Giaccio, Alfredo"]
[Black "Hernandez, Gustavo"]
[Result "0-1"]
[ECO "D24"]
[EventDate "1990.??.??"]
[PlyCount "148"]

1.d4 d5 2.Nf3 Nf6 3.c4 dxc4 4.Nc3 c5 5.d5 e6 6.e4 exd5 7.e5 Nfd7 8.Bg5 f6 
9.Bh4 Nc6 10.Nxd5 Be7 11.Bxc4 Ndxe5 12.Nxe5 Nxe5 13.O-O Nxc4 14.Qa4+ Kf7 
15.Qxc4 Be6 16.Rad1 Re8 17.Rfe1 Bf8 18.f4 b5 19.Qb3 g6 20.Rxe6 Rxe6 21.
Bxf6 Qc8 22.Qh3 Rxf6 23.Qxh7+ Bg7 24.Nxf6 Kxf6 25.Rd6+ Kf7 26.Qxg6+ Kg8 
27.h4 Qe8 28.Qg5 Qe1+ 29.Kh2 Rf8 30.h5 Qe4 31.Rg6 Qxf4+ 32.Kh3 Qxg5 33.
Rxg5 Kh7 34.Rxc5 b4 35.g4 Rf2 36.g5 Rxb2 37.Rc7 Kg8 38.Rxa7 b3 39.h6 Bxh6 
40.axb3 Bxg5 41.Kg4 Bd2 42.Kf5 Rxb3 43.Kg6 Rb6+ 44.Kf5 Bb4 45.Rd7 Kf8 46.
Rc7 Be7 47.Ra7 Kf7 48.Ra5 Rh6 49.Ra7 Rh5+ 50.Kg4 Rb5 51.Kf4 Ke6 52.Kg4 
Rb4+ 53.Kf3 Bd6 54.Ra6 Kd5 55.Ra5+ Bc5 56.Ra8 Ke5 57.Rh8 Rb3+ 58.Ke2 Bd6 
59.Rd8 Ra3 60.Kd2 Kd5 61.Ke2 Rh3 62.Kd2 Ke5 63.Ke2 Bc5 64.Re8+ Kf4 65.Ra8 
Bd4 66.Re8 Be5 67.Kd2 Ke4 68.Kc2 Rc3+ 69.Kd2 Rc7 70.Kd1 Rc6 71.Kd2 Rc5 72.
Re7 Rb5 73.Kc1 Kd3 74.Rd7+ Bd4 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Minero, Sergio"]
[Black "Amura, Claudia"]
[Result "1-0"]
[ECO "D79"]
[EventDate "1990.??.??"]
[PlyCount "67"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.Nf3 Bg7 6.cxd5 cxd5 7.Nc3 O-O 8.Ne5 e6
9.O-O Nfd7 10.f4 Nc6 11.Be3 Nb6 12.Bf2 Bd7 13.e4 Ne7 14.Nxd7 Qxd7 15.e5 
Rfc8 16.Qd3 Na4 17.Nd1 Qc6 18.b3 Nc3 19.Ne3 Qb5 20.Qxb5 Nxb5 21.Rfd1 Nc6 
22.Ng4 h5 23.Ne3 Bf8 24.g4 Nbxd4 25.Kh1 Ne2 26.f5 Nc3 27.Rg1 Nxe5 28.fxe6 
fxe6 29.gxh5 Nd3 30.Bh4 Ne2 31.Bh3 Nxg1 32.Bxe6+ Kg7 33.Rxg1 Rc1 34.Nf5+ 
1-0

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Paredes, Elias"]
[Black "Rodrigues, Adriano"]
[Result "0-1"]
[ECO "D07"]
[EventDate "1990.??.??"]
[PlyCount "54"]

1.d4 d5 2.c4 Nc6 3.e3 Nf6 4.Nc3 g6 5.Qb3 e6 6.Nf3 Bg7 7.Be2 O-O 8.cxd5 
exd5 9.O-O Ne7 10.Bd2 c6 11.Qa3 Nf5 12.b4 a6 13.Qb3 Be6 14.a4 Nd6 15.b5 
axb5 16.axb5 c5 17.Rxa8 Qxa8 18.Ng5 c4 19.Qb4 Qd8 20.f3 Bf5 21.Nh3 Bxh3 
22.gxh3 Bh6 23.Nd1 Qd7 24.Nf2 Nxb5 25.Ng4 Nxg4 26.hxg4 Re8 27.f4 Nxd4 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Rodriguez, Andres"]
[Black "Playa, Marcelo"]
[Result "0-1"]
[ECO "C18"]
[EventDate "1990.??.??"]
[PlyCount "86"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 
Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 Bd7 12.Qd3 dxc3 13.Rb1 Rc8 14.Qxc3 Nf5 
15.Bd2 b6 16.Rb2 Qd8 17.Qh3 d4 18.g4 Ne3 19.Ng3 Qe7 20.Ra2 Kd8 21.Ne4 Nxg4
22.Rg1 f5 23.Nd6 Rb8 24.Be2 Kc7 25.Bb4 Qg7 26.Nb5+ Kb7 27.Bd6 Rbc8 28.Rb2 
Qh6 29.Qxh6 Nxh6 30.Rxg8 Rxg8 31.h3 Nf7 32.Kf2 a6 33.Nc7 Nxd6 34.Bxa6+ 
Kxc7 35.exd6+ Kxd6 36.Rxb6 Rb8 37.Rxb8 Nxb8 38.Be2 e5 39.fxe5+ Kxe5 40.h4 
Kf4 41.Ke1 Nc6 42.Kd2 Ne5 43.c3 d3 0-1

[Event "15th Pan-American U20 final A"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Rodriguez, Pedro Cesar"]
[Black "Oblitas, Carlomagno"]
[Result "0-1"]
[ECO "D35"]
[EventDate "1990.??.??"]
[PlyCount "62"]

1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Nc3 c6 5.cxd5 exd5 6.Bg5 Be7 7.e3 Bf5 8.Bd3 
Bxd3 9.Qxd3 O-O 10.O-O Ne4 11.Bxe7 Qxe7 12.Rab1 Nd7 13.Rfc1 Nd6 14.Na4 
Rfe8 15.Nc5 Nxc5 16.Rxc5 Nc4 17.b4 a6 18.a4 Qd6 19.Nd2 Nxd2 20.Qxd2 Re6 
21.b5 axb5 22.axb5 Rh6 23.g3 Qe6 24.bxc6 bxc6 25.Rbc1 Qh3 26.f3 Qd7 27.Qc2
Rc8 28.Qd3 Re6 29.Qf5 g6 30.Qg4 Rce8 31.Rxc6 f5 0-1

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Barahona, Daniel"]
[Black "Silva, Sebastian"]
[Result "1/2-1/2"]
[ECO "C99"]
[EventDate "1990.??.??"]
[PlyCount "29"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.Re1 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4 Bd7 14.Nf1 Ne8 15.Ne3 
1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Bertona, Fernando"]
[Black "Ribas, Alejandro"]
[Result "1/2-1/2"]
[ECO "D36"]
[EventDate "1990.??.??"]
[PlyCount "33"]

1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 O-O 6.cxd5 exd5 7.e3 c6 8.Bd3 
Nbd7 9.Qc2 Re8 10.O-O Nf8 11.Rae1 Ne4 12.Bxe7 Qxe7 13.Bxe4 dxe4 14.Nd2 f5 
15.f3 exf3 16.Nxf3 Be6 17.e4 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Peralta, Eduardo"]
[Black "Mercado, Osvaldo"]
[Result "1/2-1/2"]
[ECO "C05"]
[EventDate "1990.??.??"]
[PlyCount "12"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 b6 6.c3 c5 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "10"]
[White "Zarnicki, Pablo"]
[Black "Pardo, Marco"]
[Result "1-0"]
[ECO "B09"]
[EventDate "1990.??.??"]
[PlyCount "59"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.O-O Re8 8.e5 dxe5
9.fxe5 Nd5 10.Ne4 f6 11.c4 Ndb4 12.Bb1 Bg4 13.d5 Nxe5 14.Qb3 Bxf3 15.gxf3 
a5 16.f4 Nf7 17.f5 b6 18.fxg6 hxg6 19.Qg3 Ne5 20.Bf4 Nxc4 21.Qxg6 Qxd5 22.
Nc3 Qc5+ 23.Rf2 Ne5 24.Qh7+ Kf8 25.Bh6 Bxh6 26.Qxh6+ Kf7 27.Qh5+ Kg7 28.
Qh7+ Kf8 29.Ne4 Qd4 30.Qh8+ 1-0

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Mercado, Osvaldo"]
[Black "Silva, Sebastian"]
[Result "0-1"]
[ECO "B31"]
[EventDate "1990.??.??"]
[PlyCount "78"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.d4 cxd4 8.e5 Nd5
9.cxd4 d6 10.Nc3 Nb6 11.Bf4 Bg4 12.Bxc6 bxc6 13.h3 Bxf3 14.Qxf3 d5 15.Rac1
e6 16.Qg4 Nd7 17.Na4 Qa5 18.b3 Rfc8 19.Qe2 Qb4 20.Red1 c5 21.Rd3 cxd4 22.
Rcd1 Qb5 23.h4 Rc6 24.Qe1 Qb8 25.Rxd4 Bxe5 26.Bxe5 Qxe5 27.Qa5 a6 28.g3 
Rac8 29.R4d2 Qf5 30.Qb4 Ne5 31.Kg2 Qf3+ 32.Kg1 Rc1 33.Nb2 Qf6 34.Kg2 Nf3 
35.Rxc1 Rxc1 36.Re2 Rg1+ 37.Kh3 Rh1+ 38.Kg2 Rh2+ 39.Kf1 Qf5 0-1

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Pardo, Marco"]
[Black "Ribas, Alejandro"]
[Result "1/2-1/2"]
[ECO "E32"]
[EventDate "1990.??.??"]
[PlyCount "36"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b6 7.Nf3 Bb7 8.g3 
d6 9.Bg2 Nbd7 10.O-O c5 11.Rd1 Qe7 12.Nh4 Bxg2 13.Nxg2 Rac8 14.Qd3 cxd4 
15.Qxd4 Nc5 16.Qh4 Rfd8 17.Bg5 Nce4 18.Bxf6 Nxf6 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Peralta, Eduardo"]
[Black "Barahona, Daniel"]
[Result "1/2-1/2"]
[ECO "C25"]
[EventDate "1990.??.??"]
[PlyCount "27"]

1.e4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3 Nf6 7.h3 O-O 8.Qd2 Nd4 
9.O-O-O Bd7 10.Bh6 b5 11.Bxg7 Kxg7 12.f4 b4 13.Nce2 c5 14.Nf3 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "11"]
[White "Zarnicki, Pablo"]
[Black "Bertona, Fernando"]
[Result "1/2-1/2"]
[ECO "A38"]
[EventDate "1990.??.??"]
[PlyCount "16"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 c5 6.Nc3 Nc6 7.b3 b6 8.Bb2 Bb7 
1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Barahona, Daniel"]
[Black "Zarnicki, Pablo"]
[Result "0-1"]
[ECO "A08"]
[EventDate "1990.??.??"]
[PlyCount "50"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d3 d5 6.Nbd2 c5 7.e4 Nc6 8.Re1 e5 
9.exd5 Nxd5 10.Nc4 Re8 11.a4 b6 12.c3 Bb7 13.Qb3 Nc7 14.Be3 Rb8 15.Rad1 
Ne6 16.Bc1 Qc7 17.Re2 Kh8 18.Nfd2 Ncd4 19.cxd4 Nxd4 20.Qa3 Nxe2+ 21.Kf1 
Bxg2+ 22.Kxg2 Rbd8 23.Ne4 f5 24.Nc3 Qb7+ 25.f3 Nxc1 0-1

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Bertona, Fernando"]
[Black "Peralta, Eduardo"]
[Result "1/2-1/2"]
[ECO "B70"]
[EventDate "1990.??.??"]
[PlyCount "22"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.O-O O-O 8.Bg5 
Nc6 9.Nb3 Be6 10.Kh1 a5 11.a4 h6 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Ribas, Alejandro"]
[Black "Mercado, Osvaldo"]
[Result "1/2-1/2"]
[ECO "C95"]
[EventDate "1990.??.??"]
[PlyCount "26"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Nb8 10.d4 Nbd7 11.Nbd2 Re8 12.Ng5 Rf8 13.Ngf3 Re8 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "12"]
[White "Silva, Sebastian"]
[Black "Pardo, Marco"]
[Result "1-0"]
[ECO "B08"]
[EventDate "1990.??.??"]
[PlyCount "79"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.h3 O-O 6.Be3 Nc6 7.Be2 e5 8.dxe5 
dxe5 9.O-O a6 10.a4 Be6 11.Ng5 Qe7 12.Nxe6 fxe6 13.a5 Qb4 14.Ra4 Qe7 15.
Bc4 Kh8 16.Qb1 Nd4 17.b4 Nd7 18.Ne2 b5 19.axb6 Nxb6 20.Qa2 Nxa4 21.Qxa4 
Qh4 22.c3 Nxe2+ 23.Bxe2 Rfd8 24.Qc6 Qe7 25.Bxa6 Qd6 26.Qxd6 Rxd6 27.b5 Bf8
28.Bb7 Ra2 29.c4 Rc2 30.c5 Rd8 31.Bg5 Rb8 32.c6 Kg7 33.Rd1 Bd6 34.b6 Rf8 
35.Rxd6 cxd6 36.c7 h6 37.Be3 Kf7 38.Bxh6 Rg8 39.Bg5 Ke8 40.Bc6+ 1-0

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Mercado, Osvaldo"]
[Black "Zarnicki, Pablo"]
[Result "0-1"]
[ECO "C04"]
[EventDate "1990.??.??"]
[PlyCount "34"]

1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6 5.e5 Nd7 6.Nb3 Be7 7.c3 b6 8.Bd3 a5 
9.a4 Ncb8 10.O-O Ba6 11.Re1 Bxd3 12.Qxd3 O-O 13.Bf4 c5 14.c4 Nc6 15.cxd5 
Nb4 16.Qc3 Nxd5 17.Qd2 c4 0-1

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Pardo, Marco"]
[Black "Peralta, Eduardo"]
[Result "1/2-1/2"]
[ECO "A56"]
[EventDate "1990.??.??"]
[PlyCount "38"]

1.d4 c5 2.d5 Nf6 3.c4 e5 4.Nc3 d6 5.e4 Be7 6.Nf3 O-O 7.Be2 Nbd7 8.O-O Ne8 
9.Rb1 g6 10.Nd2 Ng7 11.b4 b6 12.Ba3 f5 13.Nb3 Nf6 14.bxc5 bxc5 15.Nd2 Kh8 
16.Rb3 Nfh5 17.exf5 Nf4 18.fxg6 hxg6 19.Bc1 Nf5 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Ribas, Alejandro"]
[Black "Barahona, Daniel"]
[Result "1/2-1/2"]
[ECO "C54"]
[EventDate "1990.??.??"]
[PlyCount "16"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.
O-O Bxc3 1/2-1/2

[Event "15th Pan-American U20 final B"]
[Site "Merlo ARG"]
[Date "1990.07.??"]
[Round "14"]
[White "Silva, Sebastian"]
[Black "Bertona, Fernando"]
[Result "1/2-1/2"]
[ECO "D38"]
[EventDate "1990.??.??"]
[PlyCount "120"]

1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 Nbd7 7.e3 c5 8.Bxf6 
Nxf6 9.Bb5+ Bd7 10.Bxd7+ Qxd7 11.O-O Bxc3 12.bxc3 O-O 13.dxc5 Rac8 14.Qd4 
Rfe8 15.Ne5 Qc7 16.Ng4 Nxg4 17.Qxg4 Qxc5 18.Rab1 b6 19.Qa4 Re7 20.Rb5 Qc7 
21.Rxd5 g6 22.Rfd1 Qc4 23.Qa3 Ree8 24.h3 a5 25.Qb2 Rc6 26.Rd7 Qxc3 27.Qb5 
Qc5 28.Qd3 Qc4 29.Qxc4 Rxc4 30.Rb7 Re6 31.Rb1 Rc2 32.R7xb6 Rxb6 33.Rxb6 
Rxa2 34.Ra6 a4 35.g3 Kf8 36.Ra7 a3 37.Kg2 Kg7 38.g4 Kf6 39.Kg3 Ra1 40.Kf4 
a2 41.g5+ Ke6 42.e4 Kd6 43.Ra6+ Kc5 44.Ke5 Kc4 45.Kf6 Kb3 46.Kxf7 Re1 47.
f3 a1=Q 48.Rxa1 Rxa1 49.e5 Rf1 50.e6 Rxf3+ 51.Kg7 Rxh3 52.e7 Re3 53.Kxh7 
Re6 54.e8=Q Rxe8 55.Kxg6 Kc4 56.Kf7 Re1 57.g6 Rf1+ 58.Ke7 Kd5 59.g7 Rg1 
60.Kf7 Rxg7+ 1/2-1/2

